Prof. Takeshi Naitoh is a chairman and professor at the Department of lower gastrointestinal surgery, Kitasato University School of medicine. Prof. Naitoh graduated from Tohoku University School of Medicine in 1990. He visited the Minimally Invasive Surgery Center, Cleveland Clinic in 1995 as a research fellow, where he spent most time in clinical cases and animal research. Prof. Naitoh is a first fellow of Prof. Michel Gagner after he moved to the United States and performed many historical procedures with Prof. Gagner. He has been recognized as an expert in the field of colorectal cancer surgery and bariatric/metabolic surgery in Japan.
Prof. Naitoh is the President of the Japan Society of Laparoscopic Colorectal Surgery (JSLCS), and the board of governor of the Japan Society for Endoscopic Surgery (JSES), and the Japanese Society for Treatment of Obesity (JSTO).
Prof. Naitoh is the editorial board member of the journal of Surgical Case Report, which is the official case report journal of the Japan Surgical Society, and the managing editor of the Asian Journal of Endoscopic Surgery, the official journal of the JSES.
His scientific interests focus on colorectal cancer surgery, and bariatric/metabolic surgery and its mechanism against T2DM.
Selected publications from PubMed
Exploratory Analysis of Factors Associated With the Recovery of Erectile Dysfunction After Rectal Cancer Surgery (Sub-Analysis of LANDMARC Trial).
Mizuno R, Hida K, Numata M, Sakamoto T, Obama K, Shiomi A, Inada R, Shiozawa M, Ozawa M, Hotchi M, Yamamoto D, Hasegawa S, Miguchi M, Ohnuma S, Yamaguchi T, Akagi T, Kinugasa Y, Yamaguchi S, Kagawa H, Watanabe M, Naitoh T, Takemasa I
Ann Gastroenterol Surg. 2026 Sep;10(5):1623-1630 doi: 10.1002/ags3.70246.
Prognostic Impact of Circumferential Resection Margin in Minimally Invasive Surgery for Locally Advanced Rectal Cancer: A Multicenter Prospective Study.
Hamabe A, Ito M, Toda S, Suwa Y, Hasegawa S, Kotake M, Inomata M, Ueda K, Ogura A, Sugimoto K, Kimura K, Otsuka K, Noguchi T, Hida K, Hirano Y, Kawai K, Yamagishi S, Naitoh T, Takemasa I, Japan Society of Laparoscopic Colorectal Surgery
Ann Gastroenterol Surg. 2026 Aug 27 doi: 10.1002/ags3.70268.
Interaction Between Operator and Assistant Certification Is Associated With Local Recurrence After Laparoscopic Rectal Cancer Surgery: An Ancillary Analysis of the EnSSURE Study.
Sakimura Y, Bando H, Hida K, Fukuoka T, Funakoshi T, Teraishi F, Uehara K, Inoue Y, Suzuki N, Ichikawa N, Iijima H, Taketomi A, Sakai Y, Naitoh T, Takemasa I, EnSSURE study group collaboratives within the Japan Society of Laparoscopic Colorectal Surgery
Ann Gastroenterol Surg. 2026 Aug 12 doi: 10.1002/ags3.70265.
Impact of hospital volume on laparoscopic surgery for locally advanced rectal cancer: a subanalysis of the JSLCS multicenter observational study.
Fujita H, Okamura R, Hida K, Nishizaki D, Umemoto Y, Itatani Y, Yamamoto S, Akagi T, Obama K, Naitoh T
Surg Today. 2026 Aug 6 doi: 10.1007/s00595-026-03459-x.
Optimal preoperative bowel preparation for intracorporeal anastomosis in laparoscopic colectomy.
Sasaki S, Kitaguchi D, Ito M, Tanaka K, Yamaguchi T, Watanabe J, Hamamoto H, Nishimura A, Fujita F, Inada R, Takahashi H, Miguchi M, Kayano H, Naitoh T, Takemasa I, ICAN Collaborative Study Group of the Japan Society of Laparoscopic Colorectal Surgery
Surg Endosc. 2026 Jun;40(6):4636-4645 doi: 10.1007/s00464-026-12783-9.
Help your network discover Prof. Takeshi Naitoh's clinical expertise.
