More than 25 years of experience

• Surgical, interventional and medical treatment of obesity, diabetes and metabolic diseases,
• Diagnosis and treatment of gastroesophageal reflux disease
• Upper and lower gastrointestinal endoscopy
• Minimally Invasive Surgery
• Medical and Surgical Education
• Medical, surgical, experimental and technological research

1. Turkish Medical Association (since 1992)
2. European Association for Endoscopic Surgery and Other Interventional Techniques (EAES) (since 1997).
3. Society of American Gastrointestinal Endoscopic Surgeons (SAGES) (since 2000)
4. Society for Medical Innovation and Technology (since 2006)
5. International Federation for the Surgery of Obesity (2008)
6. Turkish Surgical Association (2008)
7. American Society for Metabolic and Bariatric Surgery (2009)
8. National Association for Laparoscopic and Endoscopic Surgery (Ulusal Laparoskopik Endoskopik Cerrahi Derneği) (2009)
9. General Secretary of Turkish Obesity Surgery Association (2010-2015)
10. Technology Committee Member, European Association for Endoscopic Surgery (EAES).

• Turkish
• English
• Norwegian
• Greek (beginner)

• 1998-2006: Clinical and research fellow at National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

• University Scholarship at the Institute for Cancer Research and Molecular Biology, from May 2001 to January 2006, The Medical Faculty, Norwegian University of Science and Technology, Trondheim, Norway.

• PhD candidate on the subject “The effect of pneumoperitoneum on the tissue blood flow measured by color labelled microsphere method” Tutors: Jon Erik Grønbech, MD, PhD (Section for Gastrointestinal Surgery) and Ronald Mårvik, MD, PhD (National Center for Advanced Laparoscopic Surgery), Norwegian University of Science and Technology, Trondheim, Norway.

• 2004-2006: Research and Course Director, National Center for Advanced Laparoscopic Surgery, Trondheim, Norway.

• 2006-2008: Part time research director, National Center for Advanced Laparoscopic Surgery, Trondheim, Norway.

• 2007-2011: Faculty Member, Associate Professor, Marmara University, School of Medicine, Department of General Surgery, Istanbul, Turkey

• 2011-2013: Faculty Member, Associate Professor, Director of Metabolic and Bariatric Surgery Center, Istanbul Bilim University, Medical Faculty, Department of General Surgery, Istanbul, Turkey

• 2013-Current: American Hospital, Department of General Surgery, Center of Bariatric and Metabolic Surgery, Istanbul, Turkey

• 2015-Current: Faculty Member, Professor, Koç University, Medical Faculty, Department of General Surgery, Istanbul, Turkey

1. Doctor of Medicine (awarded on July 31^st 1992 by Marmara University Faculty of Medicine in Istanbul, Turkey)
2. Specialist in General Surgery (awarded on October 30^th 1997 by General Surgery Department of Marmara University Faculty of Medicine in Istanbul, Turkey)
3. Norwegian Medical Licence (Lisens for Legevirksomhet i Norge) 7.4.1998, Saksnr.98/1309 (6) Jnr.:10130/98 Arkiv: 712.413 II TON/-
4. Norwegian General Surgery Licence (Lisens for legevirksomhet i Norge innen fagområdet generell kirurgi Saksnr.: 20.03.2000, G-1999/2019 (4) TON. Arkivnr.:712.413.1
5. Norwegian medical examination ( Medisinske fagprøven) Universitet i Oslo, 27.04.2000.
6. Norwegian language test (Trinn 3 test i norsk) Universitet i Oslo, Det Historisk-Filosofiske Fakultet, April 2000.
7. Norwegian Medical Language Course (Det obligatoriske kurset i norsk medisinsk fagspråk for utenlandske leger), Universitet i Oslo, Det Historisk-Filosofiske Fakultet, August 2001.
8. Oslo University Medical Faculty Diploma 2001
9. Additional courses for Norwegian National Subjects (Tilleggskurset i nasjonale fag, radiologi og blodtypekurset for utenlandsmedisinere), Universitet i Oslo, September 2001.
10. Assistant Surgeon Degree and Research Fellowship, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital Trondheim, Norway.
11. Norwegian Medical License (Autorisasjon) 2004
12. Research and Course Director, National Center for Advanced Laparoscopic Surgery, Trondheim, Norway.
13. Associate Professorship, Marmara University, School of Medicine, Department of General Surgery, Istanbul, Turkey.
14. Associate Professorship, İstanbul Bilim University, School of Medicine, Department of General Surgery, Istanbul, Turkey.
15. Associate Professorship and Professorship, Koç University, School of Medicine, Department of General Surgery, Istanbul, Turkey.

1. Yavuz Y, Aktan AÖ, Yeğen C (1996). Epinephrine through the T-tube: Another alternative to control postoperative bleeding after sphincteroplasty. J Hep Bil Pancr Surg 3: 289-90.

2. Yavuz Y, Yüksel M, Yeğen BC, Alican I (1999). The effect of antioxidant therapy on colonic inflammation in the rat. Res Exp Med (Berl) 199: 101-10.

3. Yavuz Y, Ystgaard B, Skogvoll E, Mårvik R (2000). A comparative experimental study evaluating the performance of surgical robots AESOP and ENDOSISTA. Surg Lap Endosc Per Tech 10 (3): 163-7.

4. Yavuz Y, Rønning K, Lyng O, Mårvik R, Grønbech JE (2001). Effect of increased intra-abdominal pressure on cardiac output and tissue blood flow assessed by color labeled microspheres in the pig. Surgical Endoscopy 15(2):149-55.

5. Baltes H, Yavuz Y, Kubota T, Mårvik R (2002) technology and applications of the resuable Olympus ultrasonic dissector. Min Invas Ther & Alllied Technol 11 (5/6): 225-230.

6. Bergamaschi R, Yavuz Y, Mårvik R (2003) Laparoscopic Bowel Resection: A comparison of three ultrasonically activated devices. JSLS Jan-Mar; 7(1): 19-22.

7. Yavuz Y, Rønning K, Lyng O, Grønbech JE, Mårvik R (2003). Effect of CO₂ pneumoperitoneum on tissue blood flow in the peritoneum, rectus abdominis and diaphragm muscles. Surgical Endoscopy 17. 1632-1635.

8. Mårvik R, Langø T, Yavuz Y (2004) An experimental operating room for advanced laparoscopic surgery. Semin Laparosc Surg 11(3):211-216.

9. Mårvik R, Yavuz Y, Waage A, Kjæve JK, Bergamaschi R (2005). Clinical Evaluation of a new ultrasonic Doppler Instrument (SonoDoppler) for detection of blood flow during laparoscopic procedures . Min Invas Ther & Alllied Technol 14 (3): 198-202.

10. Mårvik R, Langø T, Tangen GA, Lindseth F, Yavuz Y, Nagelghus Hernes TH (2005) Image-guided laparoscopic surgery: Review and current status. Minerva Chirurgica 60 (5): 305-325.

11. Haughn C, Uchal M, Raftopoulos Y, Rossi S, Santucci T, Torpey M, Pollice A, Yavuz Y, Mårvik R, Bergamaschi R (2006) Development of a total colonoscopy rat model with endoscopic submucosal injection of the cecal wall. Surg Endosc 20 (2): 270-3.

12. Yavuz Y, Rønning K, Bakkelund K, Lyng O, Aadahl P, Mårvik R, Grønbech JE (2006) Hemodynamic and tissue blood flow responses to long-term pneumoperitoneum and hypercapnia in the pig. Surg Endosc 20(9): 1394-401.

13. Yavuz Y, Skogås JG, Gulluoglu MG, Langø T, Mårvik R (2006) Are cold light sources really cold? Surg Laparosc Endosc Percutan Tech 16(5): 370-6.

14. Mårvik R, Nesbakken R, Langø T, Yavuz Y, Bjelland H, Ottermo MV, Stavdahl Ø (2006) Ergonomic design criteria for a novel laparoscopic tool handle with a tactile feedback. Minerva Chirurgica 61(5):435-44.

15. Ottermo MV, Øvstedal M, Langø T, Stavdahl Ø, Yavuz Y, Johansen TA, Mårvik R, (2006) The role of Tactile feedback in laparoscopic surgery. Surg Lap Endosc Per Tech 16(6): 390-400.

16. Langø T, Tangen GA, Mårvik R, Ystgaard B, Yavuz Y, Kaspersen JH, Solberg OV, Hernes TAN (2008) Navigation in laparoscopy- Prototype research platform for image-guided surgery. Min Invas Ther & Alllied Technol 17 (1): 17-33.

17. Langø T, Nesbakken R, Færevik H, Holbø K, Reitan J, Yavuz Y, Mårvik R (2009) Cooling vest for improving surgeons’ thermal comfort: A multidisciplinary design project. Min Invas Ther & Alllied Technol ” 18(1), 1-10.

18. Ünalan PC, Akan K, Orhun H, Akgün U, Poyanlı O, Baykan A, Yavuz Y, Beyzadeoğlu T, Nuran R, Kocaoğlu B, Topsakal N, Akman M, Karahan M (2010) A basic arthroscopy course based on motor skill training. Knee Surg Sports Traumatol Arthrosc. 18(10):1395-9.

19. Saraçoğlu KT, Saraçoğlu A, Yavuz Y, Deniz M, Göğüş FY (2011). Dopamine: A preventive agent for mesenteric ischemia and reperfusion injury in abdominal compartment syndrome. Acta Clinica Belgica 64 (3): 259-259.

20. Cingi A, Yavuz Y (2011) Intraoperative endoscopic assessment of the pouch and anastomosis during laparoscopic Roux-en-Y gastric bypass. Obes Surg 21(10): 1530-4.

21. Bereket A, Kiess W, Lustig RH, Muller HL, Goldstone AP, Weiss R, Yavuz Y, Hochberg Z (2012). Hypothalamic obesity in children. Obes Rev 13(9):780-98.

22. Poelman MM, van den Heuvel B, Deelder JD, Abis GS, Beudeker N, Bittner RR, Campanelli G, van Dam D, Dwars BJ, Eker HH, Fingerhut A, Khatkov I, Koeckerling F, Kukleta JF, Miserez M, Montgomery A, Munoz Brands RM, Morales Conde S, Muysoms FE, Soltes M, Tromp W, Yavuz Y, Bonjer HJ (2013). EAES Concensus Development Conference on endoscopic repair of groin hernias. Surg Endosc 27(10): 3505-19.

23. Öztürk A, Yavuz Y, Atalay T (2015). A Case of Duodenal Obstruction and Pancreatitis due to Intragastric Balloon. Balkan Med J 32 (3): 323-326.

24. Yavuz Y, Özdemir Kumral ZN, Memi G, Dağdeviren Çevik Ö, Yeğen C, Yeğen B (2017). Serum leptin, obestatin and ghrelin levels and gastric emptying rates of liquid and solid meals in non-obese rats with Roux-en Y bypass surgery or prosthesis placement: implications for the role of vagal afferents. Obes Surg 27(4): 1037-1046.

1. Büyükgebiz O, Yavuz Y, Yeğen C, Aktan AÖ, Ulusoy NB, Yalin R (1994). Using circular stapler device for rectosigmoidal cancer. Kolon Rektum Hast Derg 4: 90-4.

2. Aktan AÖ, Yeğen C, Yavuz Y, Eti Z, Gulluoglu BM, Yalin R (1995). Endothelin responses during hepatic transplantation in pigs. Ulusal Cerrahi Dergisi 12 (4): 269-73.

3. Yavuz Y, Sarac AM, Yeğen C, Aktan AÖ, Yalın R (1996). Complications due to ulcerative colitis surgery. Kolon ve Rektum Hast Derg, 6: 111-4.

4. Yavuz Y (1996). Medicine Elsewhere, Review. Marmara Medical Journal 9 :204.

5. Topcu T, Ahıskalı R, Yavuz Y, Yalın R (1997). Pseudomyxoma peritonei and different treatment options: A case study. Kolon Rektum Hast Derg 7: 43-7.

6. Saraç M, Yavuz Y, Aktan AÖ, Mouni H, Yalın R, Scapa E (1999). Role of endothelin in obstructive jaundice. Ulusal Cerrahi Dergisi 14 (2): 82-9.

7. Yavuz Y, Yalın R (2008) Cystic tumors of pancreas: Importance of differential diagnosis 24(1), 46-52.

8. Manukyan, M, Yavuz Y, Erbarut İ, Öğünç AV, Ataizi-Çelikel Ç, Yalçın AS, Güllüoğlu BM (2008) The effect of glutathione preconditioning with whey protein on hemeoxygenase-1 system in liver ischemia-reperfusion injury in rats. Ulusal Cerrahi Dergisi 24(3), 137-144.

9. Yavuz Y (2012). The effect of bariatric surgery on gastrointestinal hormones. Türkiye Klinikleri J Gen Surg-Special Topics 5(2):31-7.

1. Günal Ö, Yavuz Y, Biren T, Aktan AÖ. The effect of increased intraabdominal pressure on deep venous thrombosis. 4^th European Congress of Video Surgery. 5-8 June 1994, Istanbul, Turkey.

2. Yavuz Y, Yeğen BC, Alican I (1998) Colonic injury induced by trinitrobenzene sulfonic acid is attenuated by antioxidant therapy (Digestive Disease Week 1998 Meeting abstract). Gastroenterology 114 (4): G4584.

3. Yavuz Y, Mårvik R, Grønbech JE. The effect of increased intraabdominal pressure on tissue blood flow in the pig. 7^th International Congress of the European Association for Endoscopic Surgery, June 23-26 1999, Linz, Austria.

4. Yavuz Y, Grønbech JE, Mårvik R. CO₂ exposure increases the blood flow in the parietal peritoneum. 7^th International Congress of the European Association for Endoscopic Surgery, June 23-26 1999, Linz, Austria.

5. Yavuz Y, Aadahl P, Grønbech JE, Mårvik R. Hemodynamic and tissue blood flow responses to hypercapnia in the Pig. 8^th International Congress of the European Association for Endoscopic Surgery, June 28 – July 1, 2000, Nice, France.

6. Yavuz Y, Mårvik R. Application of the roof-mounted integrated endo-surgery system (Endoalpha) into the modern operating theaters. 8^th International Congress of the European Association for Endoscopic Surgery, June 28 – July 1, 2000, Nice, France.

7. Bergamaschi R, Yavuz Y, Uchal M, Ignjatovic D, Mårvik R. Total Colonoscopy in rats: 1^st step towards development of a novel murine cancer model for laparoscopy studies. 8^th Biennial Congress, European Council of, April 29 – May 2, 2001, Prague, Czech Republic.

8. Uchal M, Haughn C, Rossi S, Raftopoulos Y, Yavuz Y, Mårvik R, Bergamaschi R. Development of a total colonoscopy model in rats for the study of cancer. Society of American Gastrointestinal Endoscopic Surgeons (SAGES) Meeting 2005 , April 13-16, 2005, Ft.Lauderdale, Florida, USA.

9. Uchal M, Haughn C, Rossi S, Raftopoulos Y, Yavuz Y, Mårvik R, Bergamaschi R. Development of a total colonoscopy model in rats for the study of cancer. 8^th International Congress of the European Association for Endoscopic Surgery, June 1-4, 2005, Venice, Italy.

10. Yavuz Y, Skogås JG, Güllüoğlu MG, Langø T, Mårvik R. Are cold light sources really cold? Oral presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference,11-14 Mayıs 2006, Pacific Grove, Monterey, CA, USA.

11. Yavuz Y, Langø T, Nesbakken R, Hernes TAN, Reitan J, Stavdahl Ø, Mårvik R. Improving working conditions in laparoscopic surgery. Oral presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, 11-14 Mayıs 2006, Pacific Grove, Monterey, CA, USA.

12. Langø T, Yavuz Y, Güllüoğlu MG, Ystgaard B, Mårvik R. Monitoring and comparison of bipolar and monopolar radiofrequency ablation. Oral presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, 11-14 Mayıs 2006, Pacific Grove, Monterey, CA, USA.

13. Ystgaard B, Skogås JG, Yavuz Y, Langø T, Kaspersen JH, Ommedal S, Tangen GA, Hernes TAN, Mårvik R. Future operating room in Trondheim. Oral presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, 11-14 Mayıs 2006, Pacific Grove, Monterey, CA, USA.

14. Ystgaard B, Mårvik R, Skogås JG, Yavuz Y, Langø T, Hernes TAN. Initial experiences using prototype HD camera in endoscopy. Oral presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, 11-14 Mayıs 2006, Pacific Grove, Monterey, CA, USA.

15. Langø T, Tangen GA, Ystgaard B, Yavuz Y, Kaspersen JH, Wollf A, Solberg OV, Hernes TAN, Mårvik R. 3D navigation in laparoscopic surgery. Oral and poster presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, May 11-14 2006, Pacific Grove, Monterey, CA, USA. (Nominated for poster award session).

16. Langø T, Ystgaard B, Yavuz Y, Kaspersen JH, Tangen GA, Hernes TAN, Mårvik R. Future operating room in Trondheim. 10^th World Congress of Endoscopic Surgery and 14^th International Congress of the European Association for Endoscopic Surgery (EAES) September 13-16, 2006, Berlin, Germany.

17. Langø T, Tangen GA, Ystgaard B, Yavuz Y, Kaspersen JH, Wolf A, Solberg OV, Hernes TAN, Mårvik R. 3D navigation in laparoscopic surgery. 10^th World Congress of Endoscopic Surgery and 14^th Internatinoal Congress of the European Association for Endoscopic Surgery (EAES) September 13-16, 2006, Berlin, Germany.

18. Yavuz Y, Özturk A, Bozkurtoğlu H. A cascade of complications after intragastric balloon insertion. Session 23 “Late Horror Video Show” 16. World Congress of the International Federation for the Surgery of Obesity and Metabolic Disorders. August 31 – September 3, 2011, CCH-Congress Center, Hamburg, Germany.

1. Büyükgebiz O, Yavuz Y, Yeğen C, Aktan AÖ. Usage of circular stapler device in rectosigmoidal carcinoma. 5^th National Surgery of Colon and Rectum Congress. September 11-18 1993, Girne, Cyprus.

2. Büyükgebiz O, Yavuz Y, Yeğen C, Aktan AÖ. Usage of circular stapler device in rectosigmoidal carcinoma.10^th National Turkish Gastroenterology Congress. No:396, October 3-7,1993, Bursa, Turkey.

3. Yavuz Y, Saraç M, Ghaemi M, Yeğen C, Inceoğlu R, Aktan AÖ, Yalın R. Complications due to surgery of ulcerative colitis. 6th National Congress of Colon and Rectum Surgery. (VI. Ulusal Kolon ve Rektum Cerrahisi Kongresi). September 10-14, 1995, Belek, Antalya, Turkey.

4. Cingi A, Yavuz Y, Yeğen C, Aktan AÖ, Yalın R. Surgical approach to complications of diverticulitis. 6th National Congress of Colon and Rectum Surgery.( Ulusal Kolon ve Rektum Cerrahisi Kongresi). September 10-14, 1995, Belek, Antalya, Turkey.

5. Yavuz Y, Cingi A, Saraç M, Yalın R, Aktan AÖ, Yeğen C. The effect of splenectomy on patients with ITP. National Surgical Congress (Ulusal Cerrahi Kongresi) May15-19, 1996, Antalya, Turkey.

6. Çakır, T, Yeğen C, Cingi A, Yavuz Y, Coagulation dynamics and thrombocyte funtions in obstructive jaundice. National Surgical Congress (Ulusal Cerrahi Kongresi) 2008, Abstract Book:15-16, 2008, Antalya, Turkey.

7. Terzi E, Cingi A, Yavuz Y, Yeğen C, Esoghageal function in patients in patients after partial or total gastrectomy. National Surgical Congress (Ulusal Cerrahi Kongresi) 2008, Abstract Book:111, 2008, Antalya, Turkey.

1. Yavuz Y, Yeğen C, Aktan AÖ, Sayın E. Missed tumors during laparoscopic surgery. 2nd National Congress of Laparoscopic and Endoscopic Surgery (2. Ulusal Laparoskopik Endoskopik Cerrahi Kongresi). September 14-16, 1995, İstanbul, Turkey.

2. Yavuz Y, Dalaman G, Yeğen B, Alican I. Effect of antioxidant treatment on TNBS-induced colitis in rats. Research Society for Free Radicals and Antioxidants. 1st National Congress (Serbest Radikaller ve Antioksidanlar Araştırma Derneği, 1. Ulusal Toplantı). October 30 – November 2,1997, Club Palm Beach, Side, Antalya, Turkey.

3. Attaallah W, Cingi A, Yavuz Y, Topuzoğlu A, Yeğen C. The rate of metastatic lymph nodes and survival in rectal cancer. National Surgical Congress (Ulusal Cerrahi Kongresi) 2008, May 28-31, Su Sesi Resort Hotel & Ela Resort Hotel, Antalya, Turkey.

4. Yavuz Y, Memi G, Dağdeviren O, Özdemir-Kumral ZN, Yeğen C, Yeğen BÇ. The effect of intragastric prostheses and Roux-en-Y Gastric Bypass on postprandial plasma ghrelin, leptin and obestatin. 6^th Surgical Research Congress (6.Cerrahi Araştırma Kongresi) December 8-10, 2011, Sheraton Hotel, Ankara, Turkey.

5. Özgen G, Kabaoğlu B, Yavuz Y. Treatment Modalities for Incidental Gastrointestinal Stromal Tumors During Bariatric Surgery 20^th National Surgical Congress (Ulusal Cerrahi Kongresi) 2016, April 13-17, Titanic Deluxe Hotel, Antalya, Turkey.

6. Özgen G, Kabaoğlu B, Yavuz Y. Impact of compression time, imbrication and fibrin glue on safety during laparoscopic sleeve gastrectomy. 20^th National Surgical Congress (Ulusal Cerrahi Kongresi) 2016, April 13-17, Titanic Deluxe Hotel, Antalya, Turkey.

1. Yavuz Y, Ystgaard B, Mårvik R. Which robot is more efficient? Aesop or Endosista? Society of American Gastrointestinal Endoscopic Surgeons Scientific Session, March 24-27,1999, San Antonio, Texas, USA.

2. Bergamaschi R, Yavuz Y, Mårvik R. Ultracision vs. AutoSonix vs. SonoSurg: A comparison in porcine bowel resection model. Society of American Gastrointestinal Endoscopic Surgeons Scientific Session, March 29 - April 1, 2000, Atlanta, Georgia, USA.

3. Yavuz Y, Skogås JG, Mårvik R. Are cold light sources really cold? 9^th International Congress of the European Association for Endoscopic Surgery, June 13-16 2001, Maastricht, Netherlands.

4. Langø T, Tangen GA, Ystgaard B, Yavuz Y, Kaspersen JH, Wollf A, Solberg OV, Hernes TAN, Mårvik R. 3D navigation in laparoscopic surgery. Oral and poster presentation at the 18th annual SMIT (Society of Medical Innovation and Technology) conference, Pacific Grove, Monterey, CA, USA, May 11-14, 2006. (Nominated for poster award session).

5. Yavuz Y, Rønning K, Grønbech JE, Mårvik R. Effect of blood gas correction on tissue blood flow. 2007 SAGES Congress, Las Vegas, USA. April 17-22, 2007.

6. Cingi A, Yavuz Y. Peroperative Endoscopic Assessment of the Pouch, and the Anastomosis During Laparoscopic Roux-En-Y Gastric Bypass. 14th World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders Paris, FRANCE, AUG 26-29, 2009 Int Federat Surg Obes & Metabol Disorders. Obesity Surgery 19(8): 1059.

7. Yavuz Y, Akova A, Cingi A. Evaluation of the Intragastric prosthesis (Endogast) as a weight reduction procedure. 14th World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders Paris, FRANCE, AUG 26-29, 2009 Int Federat Surg Obes & Metabol Disorders. Obesity Surgery 19(8): 1059.

8. Yavuz Y, Memi G, Özdemir ZN, Yeğen C, Yeğen BÇ. Effect of Intragastric prostheses on gastric emptying and motility. 27^th Annual Meeting of American Society for Metabolic & Bariatric Surgery (ASMBS). 21-26 Haziran 2010, Las Vegas, Nevada, USA.

9. Memi G, Dagdeviren O, Özdemir ZN, Yeğen C, Yeğen BÇ, Yavuz Y. The effects of intragastric prosthesis placement and Roux-en-Y gastric bypass surgery on postprandial plasma levels of ghrelin, leptin and obestatin. Turkish-Feps Physiology Congress September 3-7, 2011, Istanbul, Turkey.

10. Yavuz Y. Rhabdomyolyis: A rare complication after bariatric surgery. 18^th World Congress of International Federation for the Surgery of Obesity & Metabolic Disorders (IFSO). 28-31 August 2013, Istanbul, Turkey.

11. Ağcaoğlu O, Uymaz DS, Bayram O, Bilgiç C, Özgen GK, Yavuz Y. Different treatment modalities for incidental gastrointestinal stromal tumors foung during laparoscopic sleeve gastrectomy: case series. Surgical Spring Week, SAGES 2017, George R. Brown Convention Center, March 22-25, 2017, Houston, Texas, USA.

12. Uymaz DS, Agcaoglu O, Bayram O, Bilgiç C, Özgen GK, Yavuz Y. Technical tricks for safer laparoscopic sleeve gastrectomy. Surgical Spring Week, SAGES 2017, George R. Brown Convention Center, March 22-25, 2017, Houston, Texas, USA.

1. Laparoscopic Upper GI Tract Surgery Course (by A. Cuschieri, J.J. Jakimowicz and E. Lezoche). April 4-5, 1997 at A.S.E. Continuing Education Center, Elancourt Cedex, France.

2. Visiting Clinical Fellow in Departments of Endoscopic Laser Treatment, ERCP and Minimally Invasive Surgery in Lund University, Department of Surgery, Lund, Sweden (1997).

3. International Course in Laparoscopic Surgery for Colorectal Diseases Norwegian University of Science and Technology, Course TH-1075, 2-4 September 1998, Trondheim, Norway.

4. Laparascopic antireflux surgery course (by R. Mårvik, Guy B. Cadiere, Alfred Cuschieri), February 4-6, 1998. National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

5. New Devices in Laparoscopic Surgery by Professor Ara Darzi, St. Mary’s Hospital, London. St.Mary’s Hospital (videolink)- Trondheim University Hospital. 13 March 1998. National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

6. Basic Laparoscopic Surgery Course(Compulsory course for gastrointenal surgeons)Norwegian University of Science and Technology, Course TH-1094, 18-20 November 1998, Trondheim, Norway.

7. Treatment of CBD Stones and CBD Injuries, 6^th Advanced Laparoscopic Workshop, On the Norwegian Coastal Steamer "M/S Polarlys" Trondheim-Tromsø, 8-10 May 1999, Norway.

8. Postgraduate Course in Laparoscopic Surgery,7^th International Congress of the European Association for Endoscopic Surgery, 23-26 June 1999, Linz/Austria.

9. Postgraduate Course in Laparoscopic Surgery,8^th International Congress of the European Association for Endoscopic Surgery, June 28-July 1 2000, Nice/France.

10. International Course in Laparoscopic Surgery for Colorectal Diseases, Norwegian University of Science and Technology, Course TH-1075, 31 August - 2 September 2000, Trondheim, Norway.

11. New Technology in Minimally Invasive Surgery and Operating Room, 8^th Advanced Laparoscopic Workshop, on the Norwegian Coastal Steamer "M/S Nordlys" Trondheim-Bergen-Trondheim, 30 September-3 October 2000, Norway.

12. Gastric Physiology Course (PhD course) Norwegian University of Science and Technology, Course code: MD DRP 809, 12-13 October 2000, Trondheim, Norway.

13. Medical Statistics Course Part 2 (PhD course) Norwegian University of Science and Technology, Course code: MD DRP 811, 20 October-1 December 2000, Trondheim, Norway.

14. SPSS for Windows: Statistical package on PC. (PhD course) Norwegian University of Science and Technology, Course code: TH-1259, 26-27 March 2001, Trondheim, Norway.

15. Searching in PubMed and other medical databases. (PhD course) Norwegian University of Science and Technology, Course code: TH-1262, 29 March 2001, Trondheim, Norway.

16. Molecular Mechanisms of Host Defence. (PhD course) Norwegian University of Science and Technology, 7 May-11 June 2001, Trondheim, Norway.

17. Postgraduate Course, 9^th International Congress of the European Association for Endoscopic Surgery, June 13-16 2001, Maastricht, Netherlands.

18. Seminar: Molecular Physiology (Seminars for PhD in Molecular Physiology) (PhD course) Experimental animal models in functional genetical research 30. November 2001, Institute for physiology and biomedical techniques, NTNU, Trondheim, Norway.

19. Medical research in theory and practice (Compulsory PhD course) Norwegian University of Science and Technology. Course Code: MD DRP 800 (TH 1251); 5-9. February, 26-28. September, 7. December 2001, Trondheim, Norway.

20. Thorax Surgery Course, (Compulsory course for general surgeons) Course Code: TH 1300, 14-15. February 2002, NTNU, Trondheim, Norway.

21. Introduction Course: Quality of Life Measurements . (PhD course) 13-15. May 2002, NTNU, Trondheim, Norway.

22. Nordic postgraduate course in Colorectal Surgery. Course code: TH-1000, 25-27.09.2002, NTNU/ The Norwegian Medical Association, Trondheim, Norway.

23. American Advanced Pre-Hospital Trauma Life Support (PHTLS) Course. Course code: 02-1643-02, given by Norwegian Air Ambulance, 28-30. October.2002,Trondheim, Norway.

24. Additional course in fixation techniques. Advanced Pre-Hospital Trauma Life Support Course. Course code: 02-0137, given by Norwegian Air Ambulance, 28. 2002, Trondheim, Norway.

25. Vascular surgery for general surgeons. (Compulsory course for general surgeons)Norwegian University of Science and Technology. Course code: TH-1349. 19 –20 May 2003, Trondheim, Norway.

26. Diseases of the biliary tract and pancreas (Compulsory course for gastrointestinal surgeons) Norwegian University of Science and Technology. 6 –7 October 2003, Trondheim, Norway

27. Diseases of the esophagus and stomach (Compulsory course for gastrointestinal surgeons) Norwegian University of Science and Technology. 8 –9 October 2003, Trondheim, Norway.

28. Problem Based Learning (PBL) Instructor Course Norwegian University of Science and Technology. 15-16 June 2005, Trondheim, Norway.

29. Surgical and medical gastroenterology course Norwegian University of Science and Technology. 27-29 September 2005, Trondheim, Norway.

30. Post graduate course: GERD-Update 2006. 10^th World Congress of Endoscopic Surgery and 14^th Internatinoal Congress of the European Association for Endoscopic Surgery (EAES) 13-16 September 2006, Berlin, Germany.

31. Masters Common Bile Duct Hands-on Post graduate course SAGES Surgical Spring Week, April 18-22, 2007 Las Vegas, Nevada, USA.

32. Adjustable Totally Implantable Intragastric Prosthesis (ATIIP), İstanbul University, Cerrahpaşa Medical Faculty, August 6-7, 2007, Istanbul, Turkey.

33. 1^st International RFITT Workshop on Venous Insufficiency, June 12-13, 2008 Spaarne Ziekenhuis, Hoofdorp, The Netherlands.

34. Current Therapies for Varicose Veins, 20 September 2008, Swissotel, Ankara, Turkey

35. Single port surgery, Workshop at Skills Lab, Erasmus Medical Centre, 30-31 Temmuz 2009, Rotterdam, The Netherlands.

36. Da Vinci SI Training, 31 May 2011, IRCAD-EITS Training Center, Strasbourg, France.

37. 8^th Annual Obesity Summit, Science and Practice of Obesity Management. October 16-17, 2013, InterContinental Hotel and Bank of America Conference Center, Cleveland, Ohio, USA.

38. International Symposium: Prevention and Management of Complications in Bariatric Surgery, October 17-18, 2014, InterContinental Hotel and Bank of America Conference Center, Cleveland Clinic and Simulation Center, Cleveland, Ohio, USA.

1. 10^th National Turkish Gastroenterology Congress: October 3-7, 1993, Bursa, Turkey.
2. 4^th European Congress of Video Surgery: June 5-8, 1994, Istanbul.
3. 6^th National Congress of Surgery of Colon and Rectum. September 10-14, Belek, Antalya, Turkey.
4. 2^nd National Endoscopic Laparoscopic Surgery Congress: September 14-16, 1995, Istanbul, Turkey.
5. Turkish Association of Surgery of Colon and Rectum, Regional Meeting: November 22-24, 1996 Pamukkale, Denizli, Turkey.
6. Conference: Pancreas Carcinoma and Hepatic Metastasis Prof.Dr.Johannes Scheele and Prof.Dr.Marcus Büchler. 14 February 1997, Divan Hotel, Istanbul, Turkey.
7. Panel Discussion: Benign Biliary Strictures. 11 April 1997, Roche AS-Levent, Istanbul, Turkey.
8. Symposium: Current Approach to Surgery of Inguinal Hernia. Robert E. Condon, J. Barry McKernan, Lloyd M. Nyhus. May 28-29, 1997, Divan Hotel, Istanbul, Turkey.
9. Modern Operating Theatres - New Technology, E.A.E.S. Technology Group, Winter Meeting NTLF; 13 February 1998, Radisson SAS Royal Garden Hotel, Trondheim, Norway.
10. 7^th International Congress of the European Association for Endoscopic Surgery, June 23-26, 1999, Linz, Austria.
11. 8^th International Congress of the European Association for Endoscopic Surgery, June 28-July 1 2000, Nice/France.
12. 9^th International Congress of the European Association for Endoscopic Surgery, June 13-16, 2001, Maastricht, Netherlands.
13. National Hernia Congress, Cappadocia, 18-21 May 2005, Nevsehir, Turkey.
14. Society of Medical Innovation and Technology 2006 Congress, May 11-14, 2006, Pacific Grove, Monterey, California, USA.
15. 10^th World Congress of Endoscopic Surgery and 14th International Congress of the European Association for Endoscopic Surgery (EAES) 13-16 September 2006, Berlin, Germany.
16. SAGES Surgical Spring Week, April 18-22, 2007 Las Vegas, Nevada, USA.
17. National Phelobology Congress, January 12-13, 2008, Kalyon Otel, Istanbul, Turkey
18. 2^nd Technical Developments and Applications Symposium in Hepato-Pancreato- Biliary Surgery. April 24-25, 2008, The Marmara Hotel, Istanbul.
19. International Surgical Thrombosis Meeting. ‘New Improvements in VYE prevention in surgical patients’ Hilton Hotel, April 26-27, 2008, Prague, Czech Republic.
20. Developments in Benign Mammarian Diseases and Diagnosis and Treatment of Breast Cancer. Meme Hastalıkları Dernekleri Federasyonu ve Kocaeli Meme Hastalıkları Araştırma Derneği Toplantısı. May 3, 2008, Kocaeli University Hospital, Umuttepe, Kocaeli, Turkey.
21. National Surgical Congress 2008. May 28-31, 2008, Su Sesi Resort Otel & Ela Resort Otel, Antalya, Turkey.
22. Istanbul Breast Cancer Congress and National Breast Cancer Consensus Meeting, October 21-25, 2008, Polat Renaissance Otel, Istanbul.
23. 7^th Medical Surgical Endocinology Postgraduate Education Course November 27-30, 2008, Adana Hilton Hotel, Adana, Turkey.
24. Phelebology Congress, January 9-11, 2009, Swissotel Grand Efes, Izmir, Turkey.
25. 12^th National Congress for Colon and Rectum Surgery, May19-24, 2009, Maritim Pine Beach Hotel, Antalya, Turkey.
26. 2^nd National Congress of Bariatric and Metabolic Surgery, September 23-26, 2009, Kervansaray Hotel, Antalya, Turkey.
27. 9^th National Congress for Endoscopic and Laparoscopic Surgery, Kervansaray Hotel, October 28-31, 2009, Antalya, Turkey.
28. National Surgical Congress, May 26-29, 2010, Sheraton Congress Center, Ankara, Turkey.
29. International Congress of European Hernia Society. October 6-9, 2010, Wow Istanbul Convention Center, Istanbul, Turkey.
30. Ankara Surgical Days-6, January 14-16, 2011, Sheraton Hotel and Congress Center, Ankara, Turkey.
31. 10^th National Congress for Endoscopic and Laparoscopic Surgery. April 27-30, 2011, İstanbul Congress Center, Harbiye, İstanbul, Turkey.
32. EAES Technology Winter Meeting, February 25-26, 2011, Torino, Italy.
33. 19^th International Congress of the European Association for Endoscopic Surgery, June 15-18, 2011, Torino, Italy.
34. 2^nd Minimally İnvasive Surgery Congress and 3rd National Congress of Surgery for Morbid Obesity and Metabolic Diseases, September 21-24, 2011, Mardan Palace Congress Center, Antalya, Turkey.
35. 6^th Surgical Research Congress, December 8-10, 2011, Sheraton Hotel, Ankara, Turkey.
36. 18^th National Surgical Congress, May 23-27, 2012, Kaya Hotel & Congress Center, Izmir, Turkey.
37. EAES Technology Winter Meeting, January 2012, Brussels, Belgium.
38. 20^th International Congress of the European Association for Endoscopic Surgery (EAES), June 20-23 2012, Brussels, Belgium.
39. 18^th World Congress of International Federation for the Surgery of Obesity & Metabolic Disorders (IFSO). 28-31 August 2013, Istanbul, Turkey.
40. 16^th Annual Meeting of European Society of Surgery (ESS). Askeri Museum November 22-24, 2012, İstanbul, Turkey
41. Spring Educational Event, American Society for Metabolic and Bariatric Surgery, May 30- June 2, 2013, New Orleans, USA.
42. 21^st International Congress of the European Association for Endoscopic Surgery (EAES). 19-22 June 2013, Vienna, Austria.
43. “Simulation in Europe – Quo Vadis?” The Joint meeting of the NASCE and ACS-AEI. Organized by the Medical Physics Lab Simulation Center (MPLSC), University of Athens. 28-29 November 2013, Divani caravel Hotel, Athens, Greece.
44. EAES Technology Winter Meeting, January 2014, Paris, France.
45. 19^th National Surgical Congress,16-20 April 2014, Rixos Sungate Vega Congress Center, Antalya, Turkey.
46. The 14^th World Congress of Endoscopic Surgery,Hosted by and Incorporating the 22nd EAES International Congress, 25-28 June 2014, Paris, France.
47. 6^Th National Reproductive Endocrinology and Infertility Congress. November 06-09, 2014, Maxx Royal Otel, Belek, Antalya, Turkey.
48. Bariatric and Metabolic Surgery 1st Winter School. January 15-16, 2015, Cerrahpaşa Medical School, Prof.Dr.Tarık Minkari Anfisi, İstanbul, Turkey.
49. EAES Technology Winter Meeting, January 2015, Rome, Italy.
50. 23^rd Congress of the European Association of Endoscopic Surgery (EAES) 03 - 06 June 2015, Bucharest, Romania.
51. Bariatric and Metabolic Surgery Platform Meeting Video Symposium June 9-10 2017, Hilton Otel Bosphorus, Istanbul
52. 5^th International and 3rd Mediterranean Congress for the Surgery of Obesity and Metabolic Disorders, October 12-17, 2017, Ela Quality Resort Belek Hotel, Antalya, Turkey.
53. 14^th Endoskopik Laparoskopik Cerrahi Kongresi / Joint with Mediterranean & Middle Eastern Endoscopic Surgery Association (MMESA) Meeting April 19-22 2019, Limak Hotel, Bafra, Cyprus

1. Yavuz Y: "Pneumoperitoneum- techniques and complications".
   Basic Course in Laparoscopic GI Surgery, 18-20 November 1998, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

2. Yavuz Y: "Port site metastasis: What do we know?"
   Teleconference with Namdal Hospital, Inherred Hospital, Central Hospital in Møre og Romsdal and Trondheim University Hospital; Telemedicine Laparoscopic Forum, 23 March 1999, Trondheim Norway.

3. Yavuz Y: "Laparoscopy in Abdominal Trauma".
   Acute Abdomen: Diagnostic and Therapeutic Laparoscopy Course, 7-9 April 1999, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

4. Yavuz Y: "EAES Ductal Stone Study"
   Treatment of CBD Stones and CBD Injuries, 6^th Advanced Laparoscopic Workshop, On the Norwegian Coastal Steamer M/S "Polarlys" Trondheim-Tromsø, 8-10 May 1999, Norway.

5. Yavuz Y: "Reusable and Disposable instruments"
   Course for Operation Nurses in Laparoscopic Surgery. On the Norwegian Coastal Steamer M/S "Polarlys" Trondheim-Tromsø, 8-10 May 1999, Norway.

6. Yavuz Y: "Endoscopic robotsystems"
   Endoscopic Surgery course for medical technicians (Kurs i Endoskopisk Kirurgi med medisinsk teknisk vinkling). National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, 22- 23. February 2000, Norway.

7. Yavuz Y: "Pneumoperitoneum".
   Telemedisinsk Laparoskopisk Forum-Våren 2000 / Internundervisning Våren 2000 Gastrokirurgi: Del II. Regionsykehuset i Trondheim, 7 Mars 2000.  

8. Yavuz Y: "Effect of pneumoperitoneum on blood flow during laparoscopic surgery".
   Midt-Norsk Forskningsforum I Gastroenterologi. Teveltunet Fjellstue, Meråker, 24-26 Mars 2000.

9. Yavuz Y: "Physiology of pneumoperitoneum".
   University Course TH-1208; International course in Laparoscopic Surgery for Colorectal Diseases. National Center for Advanced Laparoscopic Surgery and Division of Gastrointestinal Surgery, Trondheim University Hospital, Trondheim, 31 August-2 September 2000, Norway.

10. Yavuz Y: "Pneumo-induction related complications".
    University Course TH-1208; International course in Laparoscopic Surgery for Colorectal Diseases. National Center for Advanced Laparoscopic Surgery and Division of Gastrointestinal Surgery, Trondheim University Hospital, Trondheim, 31 August-2 September 2000, Norway.

11. Yavuz Y: "Usefulness of robotic arm in solo surgery".
    New Technology in Minimally Invasive Surgery and Operating Room, 8^th Advanced Laparoscopic Workshop, on the Norwegian Coastal Steamer "M/S Nordlys" Trondheim-Bergen-Trondheim, 30 September-3 October 2000, Norway.

12. Yavuz Y: "Reusable and Disposable instruments"
    Course for Operation Nurses in Laparoscopic Surgery. On the Norwegian Coastal Steamer "M/S Nordlys" Trondheim-Bergen-Trondheim, 30 September-3 October 2000, Norway.

13. Yavuz Y: "Laparoscopy and port site metastasis"
    Teleconference with Namdal Sykehuset, Inherred Sykehus, Sentralsykehuset i Møre og Romsdal and Regionsykehuset i Trondheim; Telemedicine Laparoscopic Forum, 30 January 2001, Trondheim Norway.

14. Yavuz Y: "Microcirculation under laparoscopic surgery-What do we know?"
    Norsk Thorakolaparoskopisk Forum, Vintermøte, 07 March 2001, Oslo, Norway.

15. Yavuz Y: "Pneumo-induction related complications",
    "Physiology of pneumoperitoneum",
    "Laparoscopy and port site metastasis".
    Advanced Laparoscopic Symposium,10-11 April 2001, Marmara University Hospital, Istanbul, Turkey.

16. Yavuz Y: "Pneumoperitoneum- techniques and complications".
    Acute Abdomen: Diagnostic and Therapeutic Laparoscopy Course, TH-1264, 25-27 April 2001, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

17. Yavuz Y: "Laparoscopy in Abdominal Trauma".
    Acute Abdomen: Diagnostic and Therapeutic Laparoscopy Course, TH-1264, 25-27 April 2001, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

18. Yavuz Y: "Comparison of different robotic manipulators". (As invited faculty)
    9^th International Congress of the European Association for Endoscopic Surgery, June 13-16, 2001, Maastricht, Netherlands.

19. Yavuz Y: "Pneumoperitoneum- techniques and complications" and “CO2 gas pathophysiology”
    Thoraco-/Laparoscopic Course, TH-21769,  30 November-2 Desember 2005, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.

20. Yavuz Y: “Technology of Endoscopy”
    Arthroscopy courses organized by Marmara Univesity Center for Research and Clinical Applications for Sports Sciences and Health (2007-2011) (Artrokopik Motor Beceri Geliştirme Kurslari, Marmara Üniversitesi Spor Bilimleri ve Sporcu Sağlığı Araştırma ve Uygulama Merkezi (SBSAM)), Istanbul, Turkey.

21. Yavuz Y: "Current Surgical Treatment of Gastrointestinal Stromal Tumors"
    Symposium: Gastrointestinal Stromal Tumors, 19 March 2008, Marmara University Hospital, Istanbul, Turkey.

22. Yavuz Y: “Hormonal weight loss with intragastric devices”
    2^nd National Congress of Bariatric and Metabolic Surgery  (2.Ulusal Morbid Obezite Cerrahisi ve Metabolik Bozukluklar Kongresi), September 23-26, 2009, Kervansaray Hotel, Antalya,Turkey.

23. Yavuz Y: “Live operation: gastric banding”
    9^th National Congress for Endoscopic and Laparoscopic Surgery, Kervansaray Hotel, October 28-31, 2009, Antalya,Turkey.

24. Yavuz Y: “Innovation in surgery”.
    5^th Surgical Research Congress (5. Cerrahi Araştırma Kongresi). December 10-12, 2009, Sheraton Kongre Merkezi, Ankara, Turkey.

25. Yavuz Y: ”Surgical Indication: Which surgery to whom? Endoscopic Gastric Balloons”.
    17^th National Surgical Congress (17. Ulusal Cerrahi Kongresi), May 26-29, 2010, Sheraton Congress Center, Ankara, Turkey.

26. Yavuz Y: “Gastrojejunostomy leaks”
    Postgraduate Course. 18^th International Congress of the EAES, June 16-19, 2010, Geneva, Switzerland.

27. Yavuz Y: “Conventinal to future methods in bariatric surgery”
    Postgraduate course. 18^th International Congress of the EAES, June 16-19, 2010, Geneva, Switzerland.

28. Yavuz Y: “Hiatus Anatomy”.
    Postgraduate course. International Congress of European Hernia Society. October 6-9, 2010, Wow Istanbul Convention Center, Istanbul. Turkey.

29. Yavuz Y: “Fertility problems related with mesh”.
    International Congress of European Hernia Society. October 6-9, 2010, Wow Istanbul Convention Center, Istanbul, Turkey.

30. Yavuz Y: “Hiatus Hernisi Onarımları Panel Tartışması”. International Congress of European Hernia Society. October 6-9, 2010, Wow Istanbul Convention Center, Istanbul, Turkey.

31. Yavuz Y: ”New Methods in Surgery”.
    6^th National Workshop for Oncological Research (6. Ulusal Onkolojik Araştırmalar Çalıştayı) October 22-24, 2010, Kefaluka Resort, Bodrum, Turkey.

32. Yavuz Y: “Mesh use in laparoscopic reflux surgery”
    Panel Discussion, January 14-16, 2011. Ankara Cerrahi Günleri-6, Sheraton Hotel and Congress Center, Ankara, Turkey.

33. Yavuz Y: “Critical phases in laparoscopic gastric bypass and endocopic treatment of complications”.
    Panel Discussion- January 14-16, 2011. Ankara Cerrahi Günleri-6, Sheraton Hotel and Congress Center, Ankara, Turkey.

34. Yavuz Y: “Bariatric surgery in metabolic syndrome”
    January 14-16, 2011. Ankara Cerrahi Günleri-6, Sheraton Hotel and Congress Center, Ankara, Turkey.

35. Yavuz Y: “ Laparoscopic Gastric Bypass: Live Surgery”.
    10^th National Congress for Endoscopic and Laparoscopic Surgery. April 27-30, 2011, İstanbul Congress Center, Harbiye, İstanbul

36. Yavuz Y: “The effect of technology on bariatric surgery”
    EAES Technology Winter Meeting, February 25-26, 2011, Torino, Italy.

37. Yavuz Y: “ The role of bariatric surgery in hypothalamic obesity”
    (Pre-congress Satellite Symposium). 18^th European Congress on Obesity, May 24, 2011, Lütfi Kırdar Congress Center, Istanbul, Turkey.

38. Yavuz Y: “Surgical Planning based on preoperative imaging” Technology Symposium, 19^th International Congress of the European Association for Endoscopic Surgery, June 15-18, 2011, Torino, Italy.

39. Yavuz Y: “A cascade of complications after intragastric balloon insertion”. Session 23 “Late Horror Video Show” 16^th World Congress of the International Federation for the Surgery of Obesity and Metabolic Disorders. August 31-September 3, 2011, CCH-Congress Center, Hamburg, Germany.

40. Yavuz Y: “The role of gastric bypass in metabolic diseases”.
    2^nd  Minimally İnvasive Surgery Congress and 3^rd  National Congress of Surgery for Morbid  Obesity and Metabolic Diseases, September 21-24, 2011, Mardan Palace Congress Center, Antalya, Turkey.

41. Yavuz Y: “Visual Documentation”.
    Course for data recording, visual documentation and effective presentation. 6.Cerrahi Araştırma Kongresi 8-10 December 2011, Sheraton Hotel, Ankara, Turkey.

42. Satava R, Yavuz Y: “Breakfast Meeting”.
    6^th Surgical Research Congress (Cerrahi Araştırma Kongresi) December 8-10, 2011, Sheraton Hotel, Ankara, Turkey.

43. Yavuz Y: “Patient and surgical method selection: Gastric Bypass”.
    18^th National Surgical Congress (Ulusal Cerrahi Kongresi) May 23-27, 2012, Kaya Hotel & Congress Center, Izmir, Turkey

44. Yavuz Y: “Rationale and technical aspects of mini bypass”. Postgraduate Course IV-Bariatric Surgery. 20^th International Congress of the European Association for Endoscopic Surgery (EAES), June 20-23, 2012, Brussels, Belgium.

45. Bittner R, Campanelli G, Dwars B, Fingerhut A, Khatkov I, Köckerling F, Kukleta J, Miserez M, Montgomery A, Morales Conde S, Muysoms F, Poelman M, Soltes M, Yavuz Y, Van Den Heuvel B, Eker H, Bonjer J : “Concensus Conference- Endoscopic Repair of Groin Hernia”.
    20^th International Congress of the European Association for Endoscopic Surgery (EAES), June 20-23, 2012, Brussels, Belgium.

46. Yavuz Y: “Endoluminal management for metabolic disease”. 20^th International Congress of the European Association for Endoscopic Surgery (EAES), June 20-23, 2012, Brussels, Belgium.

47. Yavuz Y: “Critical appraisal of different surgical procedures in the treatment of morbid obesity and metabolic disorders (Video-based Morbid Obesity Course)”.
    16^th Annual Meeting of European Society of Surgery (ESS). Askeri Museum November 22-24, 2012, Istanbul, Turkey.

48. Yavuz Y: “Critical appraisal of different surgical procedures in the treatment of morbid obesity and metabolic disorders (Video-based Education Session)”.
    16^th Annual Meeting of European Society of Surgery (ESS). Askeri Museum, November 22-24, 2012, Istanbul, Turkey

49. Yavuz Y: “Postoperative Complications in Patients with Mini Invasive Procedures (Endo Barrier, POSE, Pacing)” Session: Bariatric and Metabolic Emergencies for the Non-bariatric Surgeons. 21th International Congress of the European Association for Endoscopic Surgery (EAES). June 19-22, 2013, Vienna, Austria.

50. Yavuz Y: “Koç University Simulation Center Project” “Simulation in Europe – Quo Vadis?”  The Joint meeting of the NASCE and ACS-AEI. Organized by the Medical Physics Lab Simulation Center (MPLSC), University of Athens. 28-29 November 2013, Divani Caravel Hotel, Athens, Greece.

51. Yavuz Y: “Correct Bariatric Follow-up” 19^th National Surgical Congress (Ulusal Cerrahi Kongresi), April 16-20, 2014, Rixos Sungate Vega Congress Center, Antalya, Turkey.

52. Yavuz Y: “Internal hernias” The 14^th World Congress of Endoscopic Surgery,Hosted by and Incorporating the 22^nd EAES International Congress, 25-28 Haziran 2014, Paris, Fransa.

53. Yavuz Y: “Bariatric and Metabolic Surgery from Obstetrical and Gynecological Perspective” Session 12, 6^Th National Reproductive Endocrinology and Infertility Congress. November 06-09, 2014, Maxx Royal Otel, Belek, Antalya, Turkey.

54. Yavuz Y: “Roux-en-Y Gastric Bypass is the most effective metabolic surgery” Bariatric and Metabolic Surgery 1^st Winter School. January 15-16, 2015, Cerrahpaşa Medical School, Prof.Dr.Tarık Minkari Anfisi, İstanbul, Turkey.

55. Yavuz Y: “Malabsorption consequenses” Session title: S09 Scientific session: Metabolic response after Bariatric Surgery. 23rd Congress of the European Association of Endoscopic Surgery (EAES) 03 - 06 June 2015, Romania, Bucharest.

56. Yavuz Y. Which malabsoptive Procedure should I chose: RYGB Bariatric and Metabolic Surgery Platform Meeting Video Symposium June 9-10 2017, Hilton Otel Bosphorus, Istanbul

57. Yavuz Y. If the gastric bypass fails: Revisional bariatric surgery after gastr’c bypass: 5^th National and 3^rd Mediterranean Congress for the Surgery of Obesity and Metabolic Disorders, October 12-17, 2017, Ela Quality Resort Belek Hotel, Antalya, Turkey.

58. Yavuz Y: “Robotic Briatric Surgery” Endoskopik Laparoskopik Cerrahi Kongresi / Joint with Mediterranean & Middle Eastern Endoscopic Surgery Association (MMESA) Meeting April 19-22 2019, Limak Hotel, Bafra, Cyprus

59. Yavuz Y: “Revisional Policies after Sleeve Gastrectomy” Endoskopik Laparoskopik Cerrahi Kongresi / Joint with Mediterranean & Middle Eastern Endoscopic Surgery Association (MMESA) Meeting April 19-22 2019, Limak Hotel, Bafra, Cyprus

1. Acute Abdomen: Diagnostic and Therapeutic Laparoscopy Course, April 7-9 1999, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, 7006 Trondheim, Norway.
2. Basic Course in Laparoscopic GI Surgery, November 18-20 1998, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, 7006 Trondheim, Norway.
3. University Course TH-1208; International course in Laparoscopic Surgery for Colorectal Diseases. National Center for Advanced Laparoscopic Surgery and Division of Gastrointestinal Surgery, Trondheim University Hospital, 7006 Trondheim, 31 August-2 September 2000, Norway.
4. Course for Operation Nurses in Laparoscopic Surgery. National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, 3 October 2000, Norway.
5. Acute Abdomen: Diagnostic and Therapeutic Laparoscopy Course, TH-1264, 25-27 April 2001, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.
6. Thoraco-/Laparoscopic Course, TH-21769,  30 November-2 Desember 2005, National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.
7. Surgical suture techniques, suture machines, laparoscopic suture techniques and high energy devices, TH-22209, 8-11 May 2006. National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.
8. Endoscopic and laparoscopic simulator training courses for gastrointestinal surgeons and gastroenterologists every other week. National Center for Advanced Laparoscopic Surgery, Trondheim University Hospital, Trondheim, Norway.
9. Instructor Technology of Endoscopy: Arthroscopy courses organized by Marmara Univesity Center for Research and Clinical Applications for Sports Sciences and Health (2007-2011).
10. Course for data recording, visual documentation and effective presentation. 6.Cerrahi Araştırma Kongresi 8-10 Aralık 2011, Sheraton Otel, Ankara, Turkey
11. “Rationale and technical aspects of mini bypass”. Postgraduate Course IV-Bariatric Surgery. 20^th International Congress of the European Association for Endoscopic Surgery (EAES), June 20-23 2012, Brussels, Belgium.
12. Post Graduate Course 6 - Bariatric surgery (in cooperation with FSOMD; French Society of Obesity and Metabolic disorders) Course directors: Mario Morino (ITALY) (EAES), Jean-Marc Chevallier (FRANCE) (FSOMD) Session 4: Management of long term failures. Chairs: Yunus Yavuz (TURKEY), Mousa Khoursheed (KUWAIT) The 14^th World Congress of Endoscopic Surgery,Hosted by and Incorporating the 22^nd EAES International Congress, June 25-28, 2014, Paris, France.

13. Bariatric and Metabolic Diseases Congress.1^st Winter School. January 15-16, 2015, Cerrahpaşa Medical School, Prof.Dr.Tarık Minkari Anfisi, İstanbul, Turkey.

14. 5^th International and 3^rd Mediterranean Congress for the Surgery of Obesity and Metabolic Disorders

• Yavuz Y. “Morbid Obezite” Malazgirt Z, Topgül K (Eds) pp: 201-12. Sabiston Cerrahi Ders Kitabı Cep Yardımcısı (Pocket Companion To Sabiston Textbook of Surgery, 17th Edition). Nobel Tıp Kitabevleri, 2013, Istanbul, Turkey.
  
  
• Bereket A, Kiess W, Lustig RH, Muller HL, Goldstone AP, Weiss R, Yavuz Y, Hochberg Z. “Hypothalamic Obesity in Children” Pediatric and Adolescent Medicine. Kiess W, Wabitsch M, Maffeis C, Sharma AM (Eds) Chapter 13, pp: 13-30. Vol.19, Karger, 2013, Basel, Switzerland.

1. Ulusal Türk Gastroenteroloji Kongresi: 3-7 Ekim 1993, Bursa.
2. 4. Avrupa Video Cerrahi Kongresi (4^th European Congress of Video Surgery): 5-8 Haziran 1994, Istanbul.
3. 6. Ulusal Kolon Rektum cerrahisi Kongresi 10-14 Eylül,1994, Belek, Antalya.
4. 2. Ulusal endoskopik Laparoskopik Cerrahi Kongresi. 14-16 Eylül, 1995, Istanbul.
5. Türk Kolon Rektum Cerrahisi Derneği, Bölgesel Toplantısı: 22-24 Kasım, 1996 Pamukkale, Denizli.
6. Konferans: Pancreas Carcinoma and Hepatic Metastasis. Prof.Dr.Johannes Scheele and Prof.Dr.Marcus Büchler. 14 Şubat 1997, Divan Hotel, Istanbul.
7. Panel: Benign Biliary Strictures. 11 Nisan 1997, Roche AS-Levent, Istanbul.
8. Sempozyum: Current Approach to Surgery of Inguinal Hernia. Robert E. Condon, J. Barry McKernan, Lloyd M. Nyhus. 28-29 Mayıs 1997, Divan Hotel, Istanbul.
9. Modern Operating Theatres - New Technology, E.A.E.S. Technology Group, Winter Meeting NTLF; 13 Şubat 1998. Radisson SAS Royal Garden Hotel, Trondheim, Norveç.
10. 7^th International Congress of the European Association for Endoscopic Surgery, 23-26 Haziran 1999, Linz, Avusturya.
11. 8^th International Congress of the European Association for Endoscopic Surgery, 28 Haziran- 1 Temmuz 2000, Nice/Fransa.
12. 9^th International Congress of the European Association for Endoscopic Surgery, 13-16 Haziran 2001, Maastricht, Hollanda.
13. Ulusal Fıtık Kongresi. 18-21 Mayıs 2005, Nevşehir.
14. Society of Medical Innovation and Technology 2006 Congress, May 11-14 Mayıs 2006, Pacific Grove, Monterey, California, ABD.
15. 10^th World Congress of Endoscopic Surgery and 14^th Internatıoal Congress of the European Association for Endoscopic Surgery (EAES) 13-16 Eylül 2006, Berlin, Almanya.
16. Sages 2007 Annual Meeting, 18-22 Nisan 2007, Paris Hotel and Casino, Las Vegas, Nevada, ABD.
17. 3. Ulusal Fleboloji Kongresi, 12-13 Ocak 2008, Kalyon Otel, İstanbul.
18. II. Hepato Pankreato Bilier Cerrahide Teknik Gelişmeler ve Uygulamalar Sempozyumu. 24-25 Nisan 2008, The Marmara Hotel, Istanbul.
19. International Surgical Thrombosis Meeting. ‘New Improvements in VYE prevention in surgical patients’ Hilton Hotel, 26-27 Nisan 2008, Prag, Çek Cumhuriyeti.
20. Benign Meme Hastalıkları ile Meme Kanseri Tanı ve Tedavisinde Gelişmeler’. Meme Hastalıkları Dernekleri Federasyonu ve Kocaeli Meme Hastalıkları Araştırma Derneği Toplantısı. 3 Mayıs 2008, Kocaeli Üniversitesi Tip Fakültesi Hastanesi, Konferans Salonu, Umuttepe, Kocaeli.
21. Ulusal Cerrahi Kongresi 2008. Türk Cerrahi Günleri. 28-31 Mayıs 2008, Su Sesi Resort Otel & Ela Resort Otel, Antalya.
22. İstanbul Meme Kanseri Konferansı ve Ulusal Meme Kanseri Konsensus Toplantısı, 21-25 Ekim 2008, Polat Renaissance Otel, İstanbul.
23. 7. Medikal Cerrahi Endokrinoloji Mezuniyet Sonrası Eğitim Kursu. 27-30 Kasım 2008, Adana Hilton Hotel, Adana.
24. 4. Fleboloji Kongresi, 9-11 Ocak 2009, Swissotel Grand Efes, İzmir.
25. 12. Ulusal Kolon ve Rektum Cerrahisi Kongresi, 19-24 Mayıs 2009, Maritim Pine Beach Hotel, Antalya.
26. 2. Ulusal Morbid Obezite Cerrahisi ve Metabolik Bozukluklar Kongresi. 23-26 Eylül 2009, Kervansaray Hotel, Lara, Antalya.
27. 9. Ulusal Endoskopik Laparoskopik Cerrahi Kongresi, 28-31 Ekim 2009, Kervansaray Otel, Lara, Antalya.
28. 17. Ulusal Cerrahi Kongresi, 26-29 Mayıs 2010, Sheraton Kongre Merkezi, Ankara.
29. International Congress of European Hernia Society. 6-9 Ekim 2010, Wow Istanbul Convention Center, Istanbul.
30. Ankara Cerrahi Günleri-6, 14-16 Ocak 2011, Sheraton Otel ve Kongre Merkezi, Ankara.
31. 10. Ulusal Endoskopik Laparoskopik Cerrahi Kongresi. 27-30 Nisan 2011, İstanbul Kongre Merkezi, Harbiye, İstanbul.
32. 2. Minimal İnvaziv Cerrahi Kongresi ve 3. Ulusal Morbid Obezite ve Metabolik Cerrahi Kongresi, 21-24 Eylül 2011, Mardan Palace Kongre Merkezi, Antalya.
33. 6. Cerrahi Araştırma Kongresi 8-10 Aralık 2011, Sheraton Otel, Ankara.
34. Ankara Cerrahi Günleri-6, 14-16 Ocak 2011, Sheraton Otel ve Kongre Merkezi, Ankara.
35. 10. Ulusal Endoskopik Laparoskopik Cerrahi Kongresi. 27-30 Nisan 2011, İstanbul Kongre Merkezi, Harbiye, İstanbul
36. EAES Technology Winter Meeting, 25-26 Şubat 2011, Torino, İtalya.
37. 18^th European Congress on Obesity, 24 Mayıs 2011, Lütfi Kırdar Kongre Merkezi, İstanbul.
38. 19^th International Congress of the European Association for Endoscopic Surgery, 15-18 Haziran 2011, Torino, İtalya.
39. 6. Cerrahi Araştırma Kongresi 8-10 Aralık 2011, Sheraton Otel, Ankara.
40. 18. Ulusal Cerrahi Kongresi 23-27 Mayıs 2012, Kaya Otel & Kongre Merkezi, İzmir.
41. 20^th International Congress of the European Association for Endoscopic Surgery (EAES), 20-23 Haziran 2012, Brüksel, Belçika.
42. 16^th Annual Meeting of European Society of Surgery (ESS). Askeri Müze, 22-24 Kasım 2012, İstanbul.
43. Spring Educational Event, American Society for Metabolic and Bariatric Surgery, 30 Mayıs-2 Haziran 2013, New Orleans, ABD.
44. 21th International Congress of the European Association for Endoscopic Surgery (EAES). 19-22 Haziran 2013, Viyana, Avusturya.
45. “Simulation in Europe – Quo Vadis?”  The Joint meeting of the NASCE and ACS-AEI. Organized by the Medical Physics Lab Simulation Center (MPLSC), University of Athens. 28-29 Kasım 2013, Divani Caravel Hotel, Atina, Yunanistan.
46. 19. Ulusal Cerrahi Kongresi, 16-20 Nisan 2014, Rixos Sungate Vega Kongre Merkezi, Antalya, Turkey.
47. The 14^th World Congress of Endoscopic Surgery,Hosted by and Incorporating the 22^nd EAES International Congress, 25-28 Haziran 2014, Paris, Fransa.
48. 6^Th National Reproductive Endocrinology and Infertility Congress. November 06-09, 2014, Maxx Royal Otel, Belek, Antalya, Turkey.
49. Bariatric and Metabolic Surgery 1^st Winter School. January 15-16, 2015, Cerrahpaşa Medical School, Prof.Dr.Tarık Minkari Anfisi, İstanbul, Turkey.
50. EAES Technology Winter Meeting, 30 Ocak 2015, Roma, İtalya.
51. 23rd Congress of the European Association of Endoscopic Surgery (EAES) 03 - 06 June 2015, Romania, Bucharest.
52. RYGB Obezite ve Metabolik Cerrahi Platformu Video Sempozyumu 9-10 Haziran 2017, Hilton Otel Bosphorus, Istanbul
53. 5^th International and 3^rd Mediterranean Congress for the Surgery of Obesity and Metabolic Disorders
54. 14. Endoskopik Laparoskopik Cerrahi Kongresi / Joint with Mediterranean & Middle Eastern Endoscopic Surgery Association (MMESA) Meeting April 19-22 2019, Limak Hotel, Bafra, Cyprus