Mori T, Kimura T, Kitajima M. Skill accreditation system for laparoscopic gastroenterologic surgeons in Japan. Minimally invasive therapy &. allied technologies: MITAT : official J Soc Minim Invasive Therapy. 2010;19(1):18–23.

Article  Google Scholar 

Aoyama S, Inoue Y, Ohki T, Itabashi M, Yamamoto M. Usefulness of the endoscopic surgical skill qualification system in laparoscopic colorectal surgery: short-term outcomes: a single-center and retrospective analysis. BMC Surg. 2019;19(1):90.

Article  PubMed  PubMed Central  Google Scholar 

Ichikawa N, Homma S, Yoshida T, Ohno Y, Kawamura H, Kamiizumi Y, et al. Supervision by a technically qualified surgeon affects the proficiency and safety of laparoscopic colectomy performed by novice surgeons. Surg Endosc. 2018;32(1):436–42.

Article  PubMed  Google Scholar 

Yamamoto T, Takahashi A, Yoshizumi T, Ishihara S, Inomata M, Imoto S et al. 2023 National Clinical Database Annual Report by the Japan Surgical Society. Surg Today. 2025;55(3):295–334.

Kakeji Y, Takahashi A, Hasegawa H, Ueno H, Eguchi S, Endo I, et al. Surgical outcomes in gastroenterological surgery in Japan: Report of the National Clinical Database 2011–2018. Annals gastroenterological Surg. 2020;4(3):250–74.

Article  Google Scholar 

Trencheva K, Morrissey KP, Wells M, Mancuso CA, Lee SW, Sonoda T, et al. Identifying important predictors for anastomotic leak after colon and rectal resection: prospective study on 616 patients. Ann Surg. 2013;257(1):108–13.

Article  PubMed  Google Scholar 

Akagi T, Endo H, Inomata M, Yamamoto H, Mori T, Kojima K, et al. Clinical impact of Endoscopic Surgical Skill Qualification System (ESSQS) by Japan Society for Endoscopic Surgery (JSES) for laparoscopic distal gastrectomy and low anterior resection based on the National Clinical Database (NCD) registry. Annals gastroenterological Surg. 2020;4(6):721–34.

Article  Google Scholar 

Kiyozumi Y, Yamaguchi T, Ichikawa N, Homma S, Ikeda K, Inada R, et al. Endoscopic Surgical Skill Qualification System: propensity-score matched cohort analysis of accredited supervisors in laparoscopic rectal cancer surgery. Br J Surg. 2023;110(12):1834–9.

Article  PubMed  Google Scholar 

Goto K, Watanabe J, Nagasaki T, Uemura M, Ozawa H, Kurose Y, et al. Impact of the endoscopic surgical skill qualification system on conversion to laparotomy after low anterior resection for rectal cancer in Japan (a secondary analysis of the EnSSURE study). Surg Endosc. 2024;38(5):2454–64.

Article  PubMed  PubMed Central  Google Scholar 

Katayama H, Tominaga T, Nonaka T, Wada H, To K, Hamada K, et al. Effect of endoscopic surgical skill qualification system for laparoscopic multivisceral resection: Japanese multicenter analysis. Surg Endosc. 2022;36(5):3068–75.

Article  PubMed  Google Scholar 

Ichikawa N, Homma S, Funakoshi T, Ohshima T, Hirose K, Yamada K, et al. Impact of technically qualified surgeons on laparoscopic colorectal resection outcomes: results of a propensity score-matching analysis. BJS open. 2020;4(3):486–98.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Ichikawa N, Homma S, Hida K, Akagi T, Kamada Y, Yamaguchi T, et al. Impact of Endoscopic Surgical Skill Qualification on Laparoscopic Resections for Rectal Cancer in Japan: The EnSSURE Study. Ann Surg Open. 2022;22(2):e160.

Article  Google Scholar 

Beck C, Weber K, Brunner M, Agaimy A, Semrau S, Grützmann R, et al. The influence of postoperative complications on long-term prognosis in patients with colorectal carcinoma. Int J Colorectal Dis. 2020;35(6):1055–66.

Article  PubMed  PubMed Central  Google Scholar 

Wang J, Li MH. Risk factors for anastomotic fistula development after radical colon cancer surgery and their impact on prognosis. World J Gastrointest Surg. 2023;15(11):2470–81.

Article  PubMed  PubMed Central  Google Scholar