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the best care

Gastrointestinal Surgery Prof. Choi, Yoon Young

Schedule Mon Tues Wed Thurs Fri Sat


Stomach cancer, Laparoscopic/Robotic Surgery, Laparoscopic hernia repair, Cholecystectomy

Professor Career

  • Yonsei University
  • CHA University

Medical Experience

  • Gastrointestinal Surgery, Severance hospital, Yonsei University
  • Upper Gastrointestinal Surgery, CHA Ilsan Medical Center, CHA University

Society, Research, Training, Awards

  • Korean Surgical Cociety
  • Korean Gastric Cancer Association
  • Korean Cancer Association
  • Korean Society of Surgical Oncology
  • World Gastric Cancer Society
  • American Association for Cancer Research
  • American Surgery Society(Fellow of American College of Surgeons)
  • UC San Diego, Moore’s Cancer Center, Cancer Genome Research Institute training
  • Gastric Cancer and Gastrointestinal Diseases 2nd Edition
  • (Springer)Surgery for Gastric Cancer
  • The 6th LG Future Medicine Award, 2014
  • The 12th Doosan Yonkang Surgery Award, 2018
  • Korean Surgery Association Young Researcher Award, 2013, Excellent Researcher Award, 2013, 2014, 2015, 2020, 2021
  • Excellent Presentation Award, Korean Gastric Cancer Association, 2016, 2018, 2019
  • Korean Cancer Society Travel Grant Award, Merit Award, 2017, 2018, 2019

Recommended video

  • Paper
  1. A multi-cohort study of the prognostic significance of microsatellite instability or mismatch repair status after recurrence of resectable gastric cancer. Cancer Research and Treatment 2020 May
  2. Prognostic significance of body mass index and prognostic nutritional index in stage II/III gastric cancer. Eur J Surg Oncol. 2020 Apr;46(4 Pt A):620-625
  3. Clinical Implications of Microsatellite Instability in Early Gastric Cancer. J Gastric Cancer. 2019 Dec;19(4):427-437.
  4. Ten Thousand Consecutive Gastrectomies for Gastric Cancer: Perspectives of a Master Surgeon. Yonsei Med J. 2019 Mar;60(3):235-242.
  5. Single Patient Classifier Assay, Microsatellite Instability, and Epstein-Barr Virus Status Predict Clinical Outcomes in Stage II/III Gastric Cancer: Results from CLASSIC Trial. Yonsei Medical Journal 2019;60:132-139
  6. Multidisciplinary treatment for patients with stage IV gastric cancer: the role of conversion surgery following chemotherapy. BMC Cancer 2018;18:1116
  7. Modification of the TNM Staging System for Stage II/III Gastric Cancer Based on a Prognostic Single Patient Classifier Algorithm. J Gastric Cancer. 2018 Jun;18(2):142-151
  8. To Treat, or Not to Treat, That is the Question: Biomarker-guided Adjuvant Chemotherapy for Stage II and III Gastric Cancer. Ann Surg. 2019 Aug;270(2):e40-e41
  9. Microsatellite Instability and Programmed Cell Death-Ligand 1 Expression in Stage II/III Gastric Cancer: Post Hoc Analysis of the CLASSIC Randomized Controlled study Ann Surg. 2019 Aug;270(2):309-316.
  10. Beyond precision surgery: Molecularly motivated precision care for gastric cancer. Eur J Surg Oncol. 2017 May;43(5):856-864.
  11. A randomized controlled trial of Roux-en-Y gastrojejunostomy vs. gastroduodenostomy with respect to the improvement of type 2 diabetes mellitus after distal gastrectomy in gastric cancer patients. PLoS One. 2017 Dec 7;12(12):e0188904
  12. Reply: Factors Favorable to Reducing the Learning Curve of Laparoscopic Gastrectomy for Gastric Cancer. J Gastric Cancer. 2016 Jun;16(2):128-9.
  13. When Eastern Surgeons Meet Western Patients: A Pilot Study of Gastrectomy with Lymphadenectomy in Caucasian Patients at a Single Korean Institute. Yonsei Med J. 2016 Sep;57(5):1294-7
  14. Staging for Remnant Gastric Cancer: The Metastatic Lymph Node Ratio vs. the UICC 7th Edition System. Ann Surg Oncol. 2016 Jul 1.
  15. Strategies to improve treatment outcome in gastric cancer: A retrospective analysis of patients from two high-volume hospitals in Korea and China Oncotarget. 2016 May 15. doi: 10.18632
  16. A Lymph Node Staging System for Gastric Cancer: A Hybrid Type Based on Topographic and Numeric Systems. PLoS One. 2016 Mar 11;11(3):e0149555.
  17. Establishment and characterisation of patient-derived xenografts as paraclinical models for gastric cancer. Sci Rep. 2016 Mar 1;6:22172. doi: 10.1038/srep22172
  18. Difficulty of predicting the presence of lymph node metastases in patients with clinical early stage gastric cancer: a case control study. BMC Cancer. 2015 Dec 1;15(1):943. doi: 10.1186/s12885-015-1940-3.
  19. Molecular Dimensions of Gastric Cancer: Translational and Clinical Perspectives. J Pathol Transl Med. 2016 Jan;50(1):1-9
  20. Short-Term Outcomes of Laparoscopic Total Gastrectomy Performed by a Single Surgeon Experienced in Open Gastrectomy: Review of Initial Experience. J Gastric Cancer. 2015 Sep;15(3):159-66
  21. Evolution of Gastric Cancer Treatment: From the Golden Age of Surgery to an Era of Precision Medicine Yonsei Med J. 2015 Sep;56(5):1177-1185
  22. Do All Patients Require Prophylactic Drainage After Gastrectomy for Gastric Cancer? The Experience of a High-Volume Center. Ann Surg Oncol. 2015 Nov;22(12):3929-37
  23. Skip lymph node metastasis in gastric cancer: is it skipping or skipped? Gastric Cancer. 2016 Jan;19(1):206-15
  24. The benefit of microsatellite instability is attenuated by chemotherapy in stage II and stage III gastric cancer: Results from a large cohort with subgroup analyses Int J Cancer. 2015 Aug 15;137(4):819-25.
  25. Metastatic melanomas of unknown primary show better prognosis than those of known primary: A systematic review and meta-analysis of observational studies. J Am Acad Dermatol. 2015 Jan;72(1):59-70
  26. Comments to young surgeons concerning laparoscopic spleen-preserving D2 lymph node dissection for advanced gastric cancer on the upper body Chin J Cancer Res. 2014;26:231-3
  27. The Efficacy of Hypnotherapy in the Treatment of Irritable Bowel Syndrome: A Systematic Review and Meta-analysis. J Neurogastroenterol Motil. 2014 Apr 30;20(2):152-162
  28. Is microsatellite instability a prognostic marker in gastric cancer?: A systematic review with meta-analysis. J Surg Oncol 2014 Aug;110(2):129-35
  29. Questions in response to "Improved survival after adding dissection of the superior mesenteric vein lymph node in advanced distal gastric cancer". Surgery 2014 Sep;156(3):736-7
  30. Current practice of gastric cancer treatment Chin Med J 2014;127:547-53
  31. The assessment of the oncological safety margin of insufficient lymph node dissection in pT2(pm) gastric cancer Yonsei Med J. 2014;55:61-9
  32. Advanced gastric cancer: is chemotherapy needed after surgery? Expert Rev Gastroenterol Hepatol. 2013 Nov;7(8):673-5.
  33. Reply. To PMID 23647790 J Allergy Clin Immunol. 2013 Oct;132(4):1013-4.
  34. Laparoscopic gastrectomy for advanced gastric cancer: Are the long-term results comparable with conventional open gastrectomy? A systematic review and meta-analysis. J Surg Oncol. 2013 Dec;108(8):550-6
  35. Robotic versus Laparoscopic versus Open Gastrectomy: A Meta-Analysis. J Gastric Cancer. 2013 Sep;13(3):136-48.
  36. Can we apply the same indication of endoscopic submucosal dissection for primary gastric cancer to remnant gastric cancer? Gastric Cancer 2014 Apr;17(2):310-5
  37. Efficacy of allergen-specific immunotherapy for atopic dermatitis: A systematic review and meta-analysis of randomized controlled trials. J allergy Clin Immunol 2013:132;110-7
  38. Comparing the short-term outcomes of totally intracorporeal gastroduodenostomy with extracorporeal gastroduodenostomy after laparoscopic distal gastrectomy for gastric cancer: a single surgeon’s experience and a rapid systematic review with meta-analysis Surg Endosc 2013 Sep;27(9):3153-61.
  39. Internal plug mesh without fixation in laparoscopic total extraperitoneal (TEP) repair of inguinal hernias: a pilot study Surg Today. 2013 Jun;43(6):603-7
  40. Reinforcing the Staple Line During Laparoscopic Sleeve Gastrectomy: Does It Have Advantages? A Meta-analysis. Obes Surg. 2012 Aug;22(8):1206-13. Comparison of the outcomes between laparoscopic totally extraperitoneal repair and prolene hernia system for inguinal hernia; review of one surgeon's experience. J Korean Surg Soc. 2012 Jan;82(1):40-4. Epub 2011 Dec 27.
  41. Learning curve for laparoscopic totally extraperitoneal repair of inguinal hernia. Can J Surg. 2012 Feb;55(1):33-6. doi: 10.1503/cjs.019610.
  42. Gallbladder pseudolithiasis caused by ceftriaxone in young adult. J Korean Surg Soc. 2011 Dec;81(6):423-6. Epub 2011 Nov 25.
  43. Is routine nasogastric tube insertion necessary in pancreaticoduodenectomy? J Korean Surg Soc. 2011 Oct;81(4):257-62. Epub 2011 Oct 28.
  44. Necrotizing Fasciitis Complicated by Duodenal Stump Leakage After Distal Gastrectomy WOUNDS 2011;23(5):144–146
  45. Sarcomatoid carcinoma of colon: extremely poor prognosis. J Korean Surg Soc. 2011 Jun;80 Suppl 1:S26-30. Epub 2011 Jun 17.
  46. Laparoscopic total extraperitoneal repair for incarcerated inguinal hernia. J Korean Surg Soc. 2011 Jun;80(6):426-30. Epub 2011 Jun 9.
  47. Simultaneous laparoscopic totally extraperitoneal repair of bilateral inguinal hernia: review of 1 surgeon experiences. Surg Laparosc Endosc Percutan Tech. 2011 Aug;21(4):264-6.
  48. Comparison of blood transfusion free pancreaticoduodenectomy to transfusion-eligible pancreaticoduodenectomy. Am Surg. 2011 Jan;77(1):81-7.
  49. Successful endoscopic management of an esophagojejunostomy leak using fibrin glue injection after a total gastrectomy. Am Surg. 2011 Mar;77(3):376-8.
  50. Transection of the hernia sac during laparoscopic totally extraperitoneal inguinal hernioplasty: is it safe and feasible? J Laparoendosc Adv Surg Tech A. 2011 Mar;21(2):149-52. Epub 2011 Jan 19.
  51. Intracorporeal anastomosis using a Lapra-ty clip in laparoscopic distal gastrectomy: initial clinical experiences. J Laparoendosc Adv Surg Tech A. 2011 Jan-Feb;21(1):51-5. Epub 2010 Dec 18.
  52. Swelling after laparoscopic total extraperitoneal repair of inguinal hernias: review of one surgeon's experience in 1,065 cases. World J Surg. 2011 Jan;35(1):43-6.
  53. The safety and effectiveness of laparoscopic total extraperitoneal (TEP) repair for recurrent inguinal hernia after open hernioplasty. J Laparoendosc Adv Surg Tech A. 2010 Jul-Aug;20(6):537-9.
  54. Primary liposarcoma of the ascending colon: a rare case of mixed type presenting as hemoperitoneum combined with other type of retroperitoneal liposarcoma. BMC Cancer. 2010 May 27;10:239.