Gastroenterological Surgery

What we do

Our department specializes in surgical care for a comprehensive range of gastrointestinal (GI) and abdominal conditions.

Outpatient Care (Kameda Clinic): In addition to evaluating surgical referrals from partner medical institutions, we provide initial consultations for benign conditions such as hernias and anorectal disorders. We also perform long-term postoperative follow-ups, surveillance imaging, and adjuvant chemotherapy for cancer patients.

Emergency & Acute Care (Emergency & Critical Care Center): We work in close collaboration with emergency physicians to deliver 24/7 rapid surgical evaluation and emergency operations for acute abdominal conditions.

(Last Updated: October 17, 2017)

Conditions we handle

We perform minimal-access, laparoscopic, and open surgical procedures for a wide spectrum of conditions:

Gastrointestinal & Abdominal Cancers (Malignant Conditions)

Esophageal Cancer
Gastric Cancer
Gastrointestinal Stromal Tumors (GIST)
Colon & Rectal Cancer / Colorectal Cancer
Pancreatic Cancer
Liver / Hepatic Cancer
Biliary Tract / Gallbladder Cancer

General & Anorectal Surgical Conditions (Benign Conditions)

Gallstones / Cholelithiasis
Hemorrhoids / Internal Hemorrhoids
Anal Fistula
Rectal Prolapse
Hernias: Inguinal Hernia, Femoral Hernia, Incisional Hernia
Bowel Obstruction / Ileus
Acute Appendicitis

Number of cases

Total Outpatient Visits: 13,626 patients
Total Inpatient Admissions: 21,990 patient days (or admissions)

(FY2024 Results)

List of Doctors

Director of Gastroenterological Surgery

Hiroshi KUSANAGI

Subspeciality
Esophageal cancer， Stomach cancer， Large intestine cancer
GIST, Postoperative Infections

Department name	Gastroenterological Surgery
Medical School	Yamaguchi University， School of Medicine
Special Qualifications	Board Certified Physhician， Certified Specialist and Advanced Certified Specialist of Japan Surgical Society Board Certified Physician， Certified Specialist and Advanced Certified Specialist of The Japan Society of Gastroenterological Surgery Board Certified Physician of Japanese Broncho-Esophagological Society Doctor of Medical Science (PhD)
Education & Career	1986.Mar. Graduated from Yamaguchi Univerisity 1986.Jun. Residency in Yamaguchi University Hospital 1986.Dec. Takamatsu Red-Cross Hospital 1988.Jun. Ube Kosan Chuo Hospital 1997 Apr. Surgeon， Kameda Medical Center 1997.Jul. Assistant Chief of Surgeon， Kameda Medical Center 2002.Nov. Vice Chief of General Surgery， Kameda Medical Center 2005.Apr. Chief of General Surgery， Kameda Medical Center 2013.Apr. Director of Gastroenterological Surgery， Kameda Medical Center 2025.Oct. Concurrent roles as Chief Director, Gastrointestinal Surgery; Health Management Department; Regional Medical Cooperation Office

Chief of Gastroenterological Surgery

Tomoko TAKAHASHI

Subspeciality
Anal Disease
Defecation dysfunction
Postpartum pelvic floor disorders

Department name	Gastroenterological Surgery
Medical School	Tokyo Women's Medical University
Special Qualifications	Board-Certified Coloproctology Specialist, Instructor & Council Member, Japan Society of Coloproctology Completed Four-Step Injection Method Training Course Completed MHLW Designated Online Medical Consultation Training Program
Education & Career	1994 Mar. Graduated from Tokyo Women's Medical University 1994 Apr. Residency in Tokyo Women's Medical University 1996 Apr. department of General Surgery， Tchikawa Central Hospital 1997 Apr. Residency in colo Proctology Center， Social Insurance Chuo General Hospital 2002 Apr. Social Insurance Chuo General Hospital 2008 Jan. Assitant Chief of Colorectal Surgery， Social Insurance Yamanashi Hospital 2013 Mar. Urogynecology Center， Kameda Medical Center 2013 Jul. Assistant Chief of medical department， Kameda Kyobashi Clinic 2014 Apr. Urogynecology Center， Kameda Medical Center 2014 May. Assistant Chief of Gastroenterological Surgery，Kameda Medical Center 2018 Apr. Chief of Gastroenterological Surgery，Kameda Medical Center

Chief of Gastroenterological Surgery

Ken HAYASHI

Subspeciality
Gastroenterological Surgery
Hepato-Biliary-Pancreatic Surgery

Department name	Gastroenterological Surgery
Medical School	Showa University School of Medicine
Special Qualifications	Board Certified Physhician， Certified Specialist and Advanced Certified Specialist of Japan Surgical Society Board Certified Specialist and Advanced Certified Speialist of The Japanese Society of Gastroenterological Surgery Board Certified Specialist of Japan Gastroenterological Endoscopy Society Japanese Society of Gastroenterological Surgery Gastroenterological Cancer Surgery Certified Doctor Board Certified Physician of Japan Society for Endoscopic Surgery General Clinical Oncologist of Japanese Board of Cancer Therapy Board Certified Specialist of The Japanese Society of Hepatology Board Certified Specialist of Japanese Society of Hepato-Biliary-Pancreatic Surgery Japanese Society of Hepato-Biliary-Pancreatic Surgery Councilor of Japanese Society of Hepato-Biliary-Pancreatic Surgery Da Vinci Console Surgeon Certificate Doctor of Medical Science (PhD)
Education & Career	2001 Mar. Graduated from Showa University School of Medicine 2001 Apr. Gastroenterological Surgery， Showa University 2002 Oct. Surgery， Ebara Hospital，Tokyo Metropolitan Health and Hospitals Corporation 2004 Apr. Surgery， Kusakabe Hospital 2005 Mar. Showa University Graduate School Completed 2005 Apr. Gastroenterological Surgery， Showa University 2006 Apr Gastroenterological Surgery， The Cancer Institute Hospital Of JFCR 2008 Apr. Surgery， Koto Hospital 2010 Apr. Surgery， Kameda Medical Center 2012 Sep. Assistant Chief of Surgery， Kameda Medical Center 2013 Apr. Assistant Chief of Gastroenterological Surgery， Kameda Medical Center 2018 Apr. Chief of Gastroenterological Surgery， Kameda Medical Center 2019 Apr. Part-Time Doctor of Gastroenterological Surgery ， Kameda Medical Center Surgery， Yokohama Asahi Chuo General Hospital 2020 Apr. Chief of Gastroenterological Surgery， Kameda Medical Center

Chief of Gastroenterological Surgery

Akinari MIYAZAKI

Subspeciality
Hepatobiliary pancreatic surgery ， Colorectal surgery

Department name	Gastroenterological Surgery
Medical School	Kyoto University Faculty of Medicine
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society Board-Certified & Instructor, Japan Society of Gastroenterological Surgery Certified Gastrointestinal Cancer Surgeon, Japan Society of Gastroenterological Surgery Technical Certified Surgeon (GI & General Surgery), Japan Society for Endoscopic Surgery Certified Abdominal Emergency Physician, Japan Society of Abdominal Emergency Medicine Da Vinci Console Surgeon Certificate Completed JATEC Course (Japan Advanced Trauma Evaluation and Care) Infection Control Doctor (ICD) Completed MHLW Clinical Training Instructor Workshop
Education & Career	2002 Mar. Graduated from Kyoto University Faculty of Medicine 2002 May. Junior Resident， Kameda Medical Center 2004 Apr. Gastroenterology， Kameda Medical Center 2005 Apr. Chiba Prefectural Sawara Hospital 2006 Apr. Chiba Cancer Center 2010 Apr. Funabashi Municipal Medical Center 2019 Oct. Chief of Gastroenterological Surgery， Kameda Medical Center

Director of Pediatric Surgery; Director of Postgraduate Training Center (concurrent)

Satoshi MATSUDA

Subspeciality
General Pediatric Surgery
Endoscopic Surgery

Department name	Gastroenterological Surgery
Medical School	Institute of Science Tokyo (formerly Tokyo Medical and Dental University)
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society Board-Certified Pediatric Surgeon, Japan Pediatric Surgical Society Completed Program Director Training Course Completed MHLW Clinical Training Instructor Workshop
Education & Career	March 2003: Graduated from Institute of Science Tokyo School of Medicine May 2003: Initial Residency, this hospital May 2005: Surgical Residency, this hospital April 2009: Pediatric Surgery, National Center for Child Health and Development April 2011: Pediatric Surgery, Ibaraki Children's Hospital July 2014: Appointed Chief Physician, Pediatric Surgery, this hospital February 2015: Chief Physician, Pediatric Surgery; Assistant Director of Postgraduate Training Center (concurrent) April 2015: Chief Physician, Pediatric Surgery; Assistant Director of Postgraduate Training Center; CSS Center Director (concurrent) June 2019: Director of Pediatric Surgery; Deputy Director of Postgraduate Training Center; CSS Center Director April 2021: Director of Pediatric Surgery; Director of Postgraduate Training Center (concurrent)

Chief of Gastroenterological Surgery

Hirotaka HONJO

Subspeciality
General Colorectal Surgery

Department name	Gastroenterological Surgery
Medical School	Shiga University of Medical Science Faculty of Medicine
Special Qualifications	Board-Certified Surgeon & Instructor, Japan Surgical Society Board-Certified & Instructor, Japan Society of Gastroenterological Surgery Certified Gastrointestinal Cancer Surgeon, Japan Society of Gastroenterological Surgery Technical Certification, Japan Society for Endoscopic Surgery (GI & General Surgery) Robotic Surgery Proctor, Japan Society for Endoscopic Surgery Da Vinci Console Surgeon Certificate
Education & Career	2004 Mar. Graduated from Shiga University of Medical Science Faculty of Medicine 2004 May. Shiga University of Medical Science Hospital 2006 May. Surgery，Hikone Municipal Hospital 2009 Apr. Senior Resident of Surgery， Kameda Medical Center 2010 Apr. Surgery， Kameda Medical Center 2013 Apr. Gastroenterological Surgery，Kameda Medical Center 2014 Dec. Assistant Chief of Gastroenterological Surgery，Kameda Medical Center 2018 Apr. Gastroenterological Surgery，Kameda Medical Center

Director, Gastrointestinal Surgery

Takehiro KATO

Subspeciality
Colorectal & Anal Disorders
Female Pelvic Floor Disorders
Laparoscopic & Robotic Surgery

Department name	Gastroenterological Surgery
Medical School	Nagoya University Graduate School
Special Qualifications	Doctor of Medical Science (PhD) Board-Certified Surgeon & Instructor, Japan Surgical Society Board-Certified & Instructor, Japan Society of Gastroenterological Surgery Board-Certified & Instructor, Japan Society of Coloproctology Board-Certified & Instructor, Japan Gastroenterological Association Technical Certification, Japan Society for Endoscopic Surgery (GI & General Surgery) Da Vinci Console Surgeon Certificate Robotic Surgery Proctor Certification (Colorectal), Japan Society for Endoscopic Surgery Certified Cancer Treatment Physician, Japan Board of Cancer Therapy Specialist, Japan Society of Female Pelvic Floor Medicine Certified Anesthesiology Designation Physician Infection Control Doctor (ICD) Completed Clinical Training Instructor Workshop Completed Palliative Care Training Completed Disaster Medical Assistance Team (DMAT) Training
Education & Career	March 2005: Graduated from Hokkaido University School of Medicine April 2005: Chubu Rosai Hospital July 2010: Toyohashi Municipal Hospital April 2013: Shizuoka Saiseikai General Hospital July 2014: Nagoya University Graduate School of Medicine April 2015: Kumiai Kosei Hospital April 2019: Toyota Kosei Hospital April 2025: Gastrointestinal Surgery, this hospital April 2026: Appointed Director, Gastrointestinal Surgery, this hospital

Chief Physician, Gastrointestinal Surgery

Kenri AKAMINE

Subspeciality
Gastrointestinal Surgery
Endoscopic Surgery

Department name	Gastroenterological Surgery
Medical School	University of the Ryukyus
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society Board-Certified & Instructor, Japan Society of Gastroenterological Surgery Certified Gastrointestinal Cancer Surgeon, Japan Society of Gastroenterological Surgery Certified Cancer Treatment Physician, Japan Board of Cancer Therapy Technical Certified Surgeon, Japan Society for Endoscopic Surgery Da Vinci Console Surgeon Certificate JATEC Provider (Japan Advanced Trauma Evaluation and Care) Completed Palliative Care Training Completed MHLW Clinical Training Instructor Workshop Robo-Doc Pilot Certification (Japan Society of Robotic Surgery, Domestic B level)
Education & Career	March 2011: Graduated from University of the Ryukyus School of Medicine April 2011: Initial Residency, Naha City Hospital April 2013: Surgery, Okinawa Prefectural Nanbu Medical Center & Children's Medical Center April 2014: Surgery, Naha City Hospital April 2016: Surgery, Miyako Hospital April 2017: Surgery, Kagoshima City Medical Association Hospital July 2020: Rural Generalist Program, Kokuhososa Municipal Hospital July 2021: Joined this hospital as Staff Surgeon, Gastrointestinal Surgery February 2023: Chief Physician, Gastrointestinal Surgery

Chief Physician, Gastrointestinal Surgery

Goshi FUJIMOTO

Subspeciality
Upper Gastrointestinal Surgery

Department name	Gastroenterological Surgery
Medical School	Hamamatsu University School of Medicine
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society Board-Certified & Instructor, Japan Society of Gastroenterological Surgery Certified Cancer Treatment Physician, Japan Board of Cancer Therapy Completed Clinical Training Instructor Workshop, Japan Hospital Association Completed Chiba Prefecture Palliative Care Training Certified Gastrointestinal Cancer Surgeon, Japan Society of Gastroenterological Surgery Da Vinci Console Surgeon Certificate
Education & Career	March 2012: Graduated from Hamamatsu University School of Medicine April 2012: Kameda Medical Center April 2018: Ofuna Chuo Hospital June 2020: Kameda Medical Center September 2021: Community Hospital Koka April 2025: Gastrointestinal Surgery, this hospital

Staff Physician, Gastrointestinal Surgery

Satomi MIURA

Subspeciality
Gastrointestinal Surgery
Colorectal & Proctologic Surgery

Department name	Gastroenterological Surgery
Medical School	Osaka University
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society Board-Certified Specialist, Japan Society of Gastroenterological Surgery Certified Gastrointestinal Cancer Surgeon, Japan Society of Gastroenterological Surgery Da Vinci Console Surgeon Certificate Completed Palliative Care Training
Education & Career	March 2018: Graduated from Osaka University School of Medicine April 2018: National Center for Global Health and Medicine Hospital April 2020: Asahi General Hospital October 2021: Joined this hospital as Surgical Resident, Gastrointestinal Surgery April 2022: Asahi General Hospital April 2023: Joined this hospital as Staff Physician, Gastrointestinal Surgery

Staff Physician, Gastrointestinal Surgery

Kazuki KUWAE

Subspeciality
Gastrointestinal Surgery

Department name	Gastroenterological Surgery
Medical School	University of the Ryukyus
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society
Education & Career	March 2020: Graduated from University of the Ryukyus School of Medicine April 2020: Yuai Medical Center April 2024: Kameda Medical Center October 2024: Yuai Medical Center April 2025: Gastrointestinal Surgery, this hospital

Staff Physician, Gastrointestinal Surgery

Yuto KAWATE

Subspeciality
Gastrointestinal Surgery
Hepato-Biliary-Pancreatic Surgery

Department name	Gastroenterological Surgery
Medical School	Gunma University
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society
Education & Career	March 2020: Graduated from Gunma University School of Medicine April 2020: Toranomon Hospital April 2022: Surgical Resident, Kameda Medical Center April 2025: Staff Physician, Pediatric & Transplant Surgery, Kumamoto University Hospital

Surgical Resident

Sayaka AOKI

Subspeciality
Surgery

Department name	Gastroenterological Surgery
Medical School	Asahikawa Medical University
Special Qualifications	Da Vinci Console Surgeon Certificate
Education & Career	March 2020: Graduated from Asahikawa Medical University School of Medicine April 2020: Initial Residency, Postgraduate Training Center, this hospital April 2022: Surgical Resident

Surgical Resident

Tatsunori KURIOKA

Subspeciality
Gastrointestinal Surgery

Department name	Gastroenterological Surgery
Medical School	Showa University
Education & Career	March 2021: Graduated from Showa University School of Medicine April 2021: Initial Residency, Kameda Medical Center April 2023: Gastroenterological & General Surgery, Showa University Hospital August 2024: Joined this hospital as Surgical Resident, Gastrointestinal Surgery

Surgical Resident

Ryohei UCHIMURA

Department name	Gastroenterological Surgery
Medical School	Institute of Science Tokyo (formerly Tokyo Medical and Dental University)
Education & Career	March 2022: Graduated from Institute of Science Tokyo School of Medicine April 2022: Initial Residency, Postgraduate Training Center, this hospital April 2024: Surgical Resident, Gastrointestinal Surgery

Surgical Resident

Ryoma SAKAMOTO

Subspeciality
Hepato-Biliary-Pancreatic Surgery
Trauma Surgery

Department name	Gastroenterological Surgery
Medical School	Osaka University
Special Qualifications	Completed Palliative Care Training
Education & Career	March 2022: Graduated from Osaka University School of Medicine April 2022: Initial Residency, Tokyo Teishin Hospital April 2024: Joined this hospital as Surgical Resident, Gastrointestinal Surgery

Surgical Resident

Yuki NAKAMURA

Department name	Gastroenterological Surgery
Medical School	Nippon Medical School
Education & Career	March 2022: Graduated from Nippon Medical School April 2022: Nanbu Tokushukai Hospital April 2024: Showa University Northern Yokohama Hospital April 2025: Gastrointestinal Surgery, this hospital

Surgical Resident

Akiko NAGAI

Subspeciality
Surgery
Cardiovascular Diseases

Department name	Gastroenterological Surgery
Medical School	Tokushima University
Education & Career	March 2023: Graduated from Tokushima University School of Medicine April 2023: Initial Residency, Postgraduate Training Center, this hospital April 2025: Surgical Resident, Gastrointestinal Surgery

Surgical Resident

Ryouto KOYAMA

Subspeciality
Gastrointestinal Surgery
Trauma Surgery
Emergency Medicine
Disaster Medicine

Department name	Gastroenterological Surgery
Medical School	International University of Health and Welfare
Education & Career	March 2023: Graduated from International University of Health and Welfare School of Medicine April 2023: Initial Residency, Teine Keijinkai Hospital (3-year program) April 2026: Joined Kameda Medical Center as Surgical Resident, Gastrointestinal Surgery

Surgical Resident

Yu KATO

Subspeciality
Surgery

Department name	Gastroenterological Surgery
Medical School	Showa University
Education & Career	March 2024: Graduated from Showa University School of Medicine April 2024: Initial Residency, Postgraduate Training Center, this hospital April 2026: Gastrointestinal Surgery

Chief Physician

Naoki OKA

Subspeciality
Trauma
Acute Care Surgery
Rehabilitation Medicine
Regional Revitalization

Department name	Gastroenterological Surgery
Medical School	Kanazawa University
Special Qualifications	Board-Certified Surgeon, Japan Surgical Society
Education & Career	March 2014: Graduated from Kanazawa University School of Medicine April 2014: Initial Residency, Postgraduate Training Center, Kameda Medical Center April 2016: Surgical Residency, Gastrointestinal Surgery October 2019: Emergency Medicine, Kurashiki Central Hospital January 2023: Joined Emergency and Critical Care Medicine, this hospital June 2023: Trauma Surgery, Khon Kaen Hospital