Gastroenterological Surgery

Staff

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Prof. OKANO

Current Research Projects

  • Evaluation of blood flow by ICG fluorescence in strangulated bowel obstruction: a multicenter prospective observational study.
  • A study on the outcomes of preoperative chemoradiotherapy and posttreatment pancreatectomy for pancreatic cancer in elderly patients over 80 years old.
  • A Study of postoperative recurrence forms in pancreatectomy after preoperative chemoradiotherapy for resectable and borderline resectable pancreatic cancer.
  • Differences in clinical characteristics of pancreatic head lesions and pancreatic body tail lesions after preoperative chemoradiotherapy for resectable pancreatic cancer.
  • Association of changes in nutritional indices with surgical outcome and prognosis after preoperative chemoradiotherapy for resectable and resectable borderline pancreatic cancer.
  • A study on the outcomes of pancreaticoduodenectomy after preoperative chemoradiotherapy for pancreatic cancer in elderly patients over 75 years old.
  • Therapeutic targets based on multilayer omics analysis of duodenal papillary carcinoma.
  • A retrospective observational study on the usefulness of transperineal minimally invasive surgery :TpMIS in perineal rectal amputation for rectal cancer.
  • Pathophysiology of pancreatic neuroendocrine tumors using metabolome analysis.
  • A study of cases of portal vein complication resection in pancreaticoduodenectomy.
  • A study on the occurrence of acute cholangitis after pancreaticoduodenectomy and treatment outcome.

Recent Publications

Hepato-Biliary-Pancreatic Diseases

A Phase II Study of Short-Course Neoadjuvant Chemoradiotherapy with Gemcitabine, S-1, and Hypofractionated Radiotherapy for Resectable and Borderline Resectable Pancreatic Ductal Adenocarcinoma 

Pancreaticobiliary Fistula Caused by Intraductal Papillary Mucinous Adenoma Requiring Pancreaticoduodenectomy

  • Mina Nagao, Hironobu Suto, Hiroyuki Matsukawa, Junichi Fujiwara, Seiko Kagawa, Takuro Fuke, Yoshio Shimizu, Arata Nishigaki, Yasuhisa Ando, Minoru Oshima Keiichi Okano 
    Surg Case Rep 2026; 12: 25-0779
Gastrointestinal Diseases

Transperineal minimally invasive surgery during laparoscopic abdominoperineal resection for low rectal cancer could improve short-term outcomes: A single-institution retrospective cohort study 

  • Kondo A, Yokota N, Kobayashi N, Feng D, Asano E, Kumamoto K, Kobara H,Okano K Langenbecks Arch Surg. 2024 Oct 4;409(1):297. doi: 10.1007/s00423-024-03493-8.

Contact Information

E-mail:gast-m@kagawa-u.ac.jp