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〒160-8582 東京都新宿区信濃町35 慶應義塾大学MAP





岡林 剛史

岡林 剛史

  • 日本外科学会専門医・指導医
  • 日本消化器外科学会専門医・指導医
  • 日本内視鏡外科学会技術認定医(大腸)
  • 日本大腸肛門病学会専門医


1999年 慶應義塾大学医学部 卒業
1999年 慶應義塾大学医学部 外科学教室 入局
2000年 浜松赤十字病院 外科
2001年 平塚市民病院 外科
2002年 慶應義塾大学医学部 一般・消化器外科
2006年 平塚市民病院 外科
2008年 慶應義塾大学医学部 一般・消化器外科 助教
2010年 英国 Imperial College London, Research fellow
2012年 慶應義塾大学医学部 一般・消化器外科 助教
2018年 慶應義塾大学医学部 一般・消化器外科 専任講師(学部内)


  • 肥満と大腸疾患の関係
  • 大腸疾患に対する低侵襲手術


  • 日本外科学会専門医・指導医
  • 日本消化器外科学会専門医・指導医
  • 日本内視鏡外科学会技術認定医(大腸)・評議員
  • 日本大腸肛門病学会専門医
  • 消化器がん外科治療認定医
  • 日本がん治療認定医機構がん治療認定医
  • ロボット手術(ダヴィンチ)トレーニングコース修了


  • 本外科学会
  • 日本消化器外科学会
  • 日本内視鏡外科学会
  • 日本大腸肛門病学会
  • 日本消化器病学会
  • 日本消化器癌発生学会
  • 日本外科感染症学会
  • 日本癌治療学会
  • 日本臨床腫瘍学会


2010年 第12回前田賞


2017年 文部科学省科学研究費 基盤研究(C)
2013年 文部科学省科学研究費 基盤研究(B) 代表者:北川雄光 研究分担者:岡林
2009年 文部科学省科学研究費 若手研究(B)
「Gene Signatureを用いた新しい分子標的薬の感受性予測法の確立」


  • 1. Matsui S, Okabayashi K, Tsuruta M, Shigeta K, Seishima R, Ishida T, Kondo T, Suzuki Y, Hasegawa H, Shimoda M, Sugimoto S, Sato T, Kitagawa Y. Interleukin-13 and its signaling pathway is associated with obesity-related colorectal tumorigenesis. Cancer Sci. 2019 Jul;110(7):2156-2165.
  • 2. Suzuki Y, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Kondo T, Kitagawa Y. Comparison of Preoperative Inflammation-based Prognostic Scores in Patients With Colorectal Cancer. Ann Surg. 2018 Mar;267(3):527-531.
  • 3. Suzuki Y, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Murakami K, Kitagawa Y. Metabolic Tumor Volume and Total Lesion Glycolysis in PET/CT Correlate With the Pathological Findings of Colorectal Cancer and Allow Its Accurate Staging. Clin Nucl Med. 2016 Oct;41(10):761-5.
  • 4. Kondo T, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Kitagawa Y. The impact of hepatic fibrosis on the incidence of liver metastasis from colorectal cancer. Br J Cancer. 2016 Jun 28;115(1):34-9.
  • 5. Shigeta K, Hasegawa H, Okabayashi K, Tsuruta M, Ishii Y, Endo T, Ochiai H, Kondo T, Kitagawa Y. Randomized phase II trial of TEGAFIRI (tegafur/uracil, oral leucovorin, irinotecan) compared with FOLFIRI (folinic acid, 5-fluorouracil, irinotecan) in patients with unresectable/recurrent colorectal cancer. Int J Cancer. 2016 Aug 15;139(4):946-54.
  • 6. Seishima R, Okabayashi K, Nagano O, Hasegawa H, Tsuruta M, Shimoda M, Kameyama K, Saya H, Kitagawa Y. Sulfasalazine, a therapeutic agent for ulcerative colitis, inhibits the growth of CD44v9(+) cancer stem cells in ulcerative colitis-related cancer. Clin Res Hepatol Gastroenterol. 2016 Sep;40(4):487-93.
  • 7. Yahagi M, Okabayashi K, Hasegawa H, Tsuruta M, Kitagawa Y. The Worse Prognosis of Right-Sided Compared with Left-Sided Colon Cancers: a Systematic Review and Meta-analysis. J Gastrointest Surg. 2016 Mar;20(3):648-55.
  • 8. Shigeta K, Okabayashi K, Hasegawa H, Tsuruta M, Seishima R, Kitagawa Y. Meta-analysis of laparoscopic surgery for recurrent Crohn's disease. Surg Today. 2016 Aug;46(8):970-8.
  • 9. Shigeta K, Okabayashi K, Baba H, Hasegawa H, Tsuruta M, Yamafuji K, Kubochi K, Kitagawa Y. A meta-analysis of the use of a transanal drainage tube to prevent anastomotic leakage after anterior resection by double-stapling technique for rectal cancer. Surg Endosc. 2016 Feb;30(2):543-550.
  • 10. Takahashi H, Okabayashi K, Tsuruta M, Hasegawa H, Yahagi M, Kitagawa Y. Self-Expanding Metallic Stents Versus Surgical Intervention as Palliative Therapy for Obstructive Colorectal Cancer: A Meta-analysis. World J Surg. 2015 Aug;39(8):2037-44.
  • 11. Yamada T, Okabayashi K, Hasegawa H, Tsuruta M, Abe Y, Ishida T, Matsui S, Kitagawa Y. Age, Preoperative Subcutaneous Fat Area, and Open Laparotomy are Risk Factors for Incisional Hernia following Colorectal Cancer Surgery. Ann Surg Oncol. 2016 Feb;23 Suppl 2:S236-41.
  • 12. Seishima R, Okabayashi K, Hasegawa H, Tsuruta M, Hoshino H, Yamada T, Kitagawa Y. Computed tomography attenuation values of ascites are helpful to predict perforation site. World J Gastroenterol. 2015 Feb 7;21(5):1573-9.
  • 13. Seishima R, Okabayashi K, Hasegawa H, Tsuruta M, Shigeta K, Matsui S, Yamada T, Kitagawa Y. Is laparoscopic colorectal surgery beneficial for elderly patients? A systematic review and meta-analysis. J Gastrointest Surg. 2015 Apr;19(4):756-65.
  • 14. Nagayama A, Hayashida T, Jinno H, Takahashi M, Seki T, Matsumoto A, Murata T, Ashrafian H, Athanasiou T, Okabayashi K, Kitagawa Y. Comparative effectiveness of neoadjuvant therapy for HER2-positive breast cancer: a network meta-analysis. J Natl Cancer Inst. 2014 Sep 15;106(9).
  • 15. Seishima R, Okabayashi K, Hasegawa H, Sugiyama D, Ishii Y, Tsuruta M, Takebayashi T, Kitagawa Y. Obesity was associated with a decreased postoperative recurrence of rectal cancer in a Japanese population. Surg Today. 2014 Dec;44(12):2324-31.
  • 16. Hasegawa H, Okabayashi K, Watanabe M, Ashrafian H, Harling L, Ishii Y, Sugiyama D, Seishima R, Darzi A, Athanasiou T, Kitagawa Y. What is the effect of laparoscopic colectomy on pattern of colon cancer recurrence? A propensity score and competing risk analysis compared with open colectomy. Ann Surg Oncol. 2014 Aug;21(8):2627-35.
  • 17. Shigeta K, Okabayashi K, Hasegawa H, Ishii Y, Ochiai H, Tsuruta M, Mukai M, Kameyama K, Uraoka T, Yahagi N, Kitagawa Y. Long-term outcome of patients with locally resected high- and low-risk rectal carcinoid tumors. J Gastrointest Surg. 2014 Apr;18(4):768-73.
  • 18. Garas G, Okabayashi K, Ashrafian H, Darzi A, Athanasiou T. Response to Amaral et al. Thyroid. 2014 Apr;24(4):779-80.
  • 19. Moritani K, Hasegawa H, Okabayashi K, Ishii Y, Endo T, Kitagawa Y. Difference in the recurrence rate between right- and left-sided colon cancer: a 17-year experience at a single institution. Surg Today. 2014 Sep;44(9):1685-91.
  • 20. Okabayashi K, Ashrafian H, Zacharakis E, Hasegawa H, Kitagawa Y, Athanasiou T, Darzi A. Adhesions after abdominal surgery: a systematic review of the incidence, distribution and severity. Surg Today. 2014 Mar;44(3):405-20.
  • 21. Garas G, Okabayashi K, Ashrafian H, Shetty K, Palazzo F, Tolley N, Darzi A, Athanasiou T, Zacharakis E. Which hemostatic device in thyroid surgery? A network meta-analysis of surgical technologies. Thyroid. 2013 Sep;23(9):1138-50.
  • 22. Okabayashi K, Ashrafian H, Hasegawa H, Yoo JH, Patel VM, Harling L, Rowland SP, Ali M, Kitagawa Y, Darzi A, Athanasiou T. Body mass index category as a risk factor for colorectal adenomas: a systematic review and meta-analysis. Am J Gastroenterol. 2012 Aug;107(8):1175-85
  • 23. Okabayashi K, Hasegawa H, Watanabe M, Ohishi T, Hisa A, Kitagawa Y. Usefulness of the preoperative administration of tegafur suppositories as alternative adjuvant chemotherapy for patients with resectable stage II or III colorectal cancer: a KODK4 multicenter randomized control trial. Oncology. 2012;83(1):16-23.
  • 24. Okabayashi K, Fujita T, Miyazaki J, Okada T, Iwata T, Hirao N, Noji S, Tsukamoto N, Goshima N, Hasegawa H, Takeuchi H, Ueda M, Kitagawa Y, Kawakami Y. Cancer-testis antigen BORIS is a novel prognostic marker for patients with esophageal cancer. Cancer Sci. 2012 Sep;103(9):1617-24.
  • 25. Kayani B, Okabayashi K, Ashrafian H, Harling L, Rao C, Darzi A, Kitagawa Y, Athanasiou T, Zacharakis E. Does obesity affect outcomes in patients undergoing esophagectomy for cancer? A meta-analysis. World J Surg. 2012 Aug;36(8):1785-95.
  • 26. Okabayashi K, Hasegawa H, Ishii Y, Endo T, Kitagawa Y. Adenosquamous carcinoma of the sigmoid colon treated by the less invasive procedures of endoscopy and laparoscopy: report of a case. Surg Today. 2009;39(11):994-7.
  • 27. Okabayashi K, Hasegawa H, Ishii Y, Endo T, Ochiai H, Kubota T, Kitagawa Y. Combination chemotherapy of biweekly irinotecan (CPT-11) plus tegafur/uracil (UFT) and leucovorin (LV) for patients with metastatic colorectal cancer: phase I/II study in Japanese patients. Cancer Chemother Pharmacol. 2009 Feb;63(3):501-7.

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