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Gastroenterology Lab
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The lab creates new diagnostics and treatments for diseases of the liver, biliary tract and pancreas, and gastrointestinal tract.

AboutAbout the lab
Provide the best medical care and create the finest medicine.
The lab conducts clinical and basic research on diseases of the liver, biliary tract, pancreas, and gastrointestinal tract.
The lab has continued under changing names, including the First Department of Internal Medicine, the Department of Medical Oncology, and the Department of Gastroenterology and Nephrology.
Under the motto "Taking on unmet medical needs," the lab aims to create new diagnostics and treatments.
Clinical care is divided into three groups, covering the liver, the biliary tract and pancreas, and the gastrointestinal tract, and many graduate students are engaged in research.
Key terms
- Unmet medical needs
- Medical needs that remain unfulfilled because no effective treatment yet exists
- Hepatocellular carcinoma
- Cancer that arises from liver cells. It often develops against a background of chronic hepatitis or cirrhosis
- Endoscopic ultrasound
- An endoscope with an ultrasound device at its tip, used to examine the biliary tract and pancreas from inside the gastrointestinal tract
NewsLab news
A paper from the lab received the 2025 Japan Biliary Association Award
A paper by Clinical Lecturer Okimoto was accepted by Clin Endosc.
A presentation from the lab was selected for the Best Presentation Award at the Japan Liver Cancer Molecular Targeted Therapy Study Group
Clinical Lecturer Okimoto received the Reviewer of the Month award from Gastrointestinal Endoscopy
A presentation from the lab was selected for the Young Investigator Award (YIA) category at the Annual Meeting of the Japanese Society of Telemedicine and Telecare
ResearchResearch themes
Three groups, covering the liver, the biliary tract and pancreas, and the gastrointestinal tract, each carry out clinical and basic research on their respective diseases. With the cooperation of patients, they pursue research that leads to new diagnostic methods and treatments.
*Illustrative imageLiver Disease and Hepatocellular Carcinoma
As liver diseases such as steatohepatitis and alcohol-related liver disease increase, the lab deals with a wide range, from chronic liver disease to hepatocellular carcinoma and portal hypertension such as esophageal varices, conducting clinical and basic research with the cooperation of patients.
*Illustrative imageBiliary and Pancreatic Diseases and Endoscopy
The lab works on chemotherapy for biliary and pancreatic cancer and on biliary drainage using techniques such as endoscopic ultrasound, and also treats primary sclerosing cholangitis and autoimmune pancreatitis. It also investigates the relationship between biliary and pancreatic cancer and the microbiome.
*Illustrative imageGastrointestinal Diseases and Endoscopic Treatment
The lab works on elucidating the pathology of inflammatory bowel disease and developing new treatments, genetic analysis of gastrointestinal cancer using specimens obtained from endoscopic treatment, and the diagnosis and endoscopic treatment of duodenal tumors.
MembersFaculty
The members of the Gastroenterology Lab consist of faculty, hospital staff physicians, graduate students, residents, trainees, and international students.
- ProfessorYohei Mikami
- Associate ProfessorJun Kato
- Clinical Associate ProfessorTomoaki Matsumura
- Clinical Associate ProfessorSadahisa Ogasawara
- Project Associate ProfessorRyo Nakagawa
- Hospital LecturerHiroshi Ooyama
- Clinical LecturerKenichiro Okimoto
- Assistant ProfessorSingo Nakamoto
- Assistant ProfessorMasato Nakamura
- Assistant ProfessorMasanori Inoe
- Assistant ProfessorYuki Ohta
- Clinical Assistant ProfessorKeiko Saito
- Project Assistant ProfessorKeisuke Koroki
- Project Assistant ProfessorChihiro Goto
- Project Assistant ProfessorJiaqi Zhang
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Endosonographiegerät” Guntau / CC BY-SA 3.0 (cropped)
- Liver Disease and Hepatocellular Carcinoma: “Liver Fibroscan Transient Elastography LSM CAP Navi Mumbai” Goleisureintl / CC BY 4.0 (cropped)
- Biliary and Pancreatic Diseases and Endoscopy: “Endoscopic Ultrasound-guided Fine Needle Biopsy” Kel898 / CC BY-SA 4.0 (cropped)
- Gastrointestinal Diseases and Endoscopic Treatment: “Endoscopy start” Samir / CC BY-SA 4.0 (cropped)
- Related lab (Pediatric Surgery Lab): “Smile Train Surgery DVIDS126461” Staff Sgt. Brendan Stephens / Public domain (cropped)
- Related lab (Cardiovascular Medicine Lab): “A cardiac catheterization procedure in the Naval Medical Center San Diego hospital’s cardiac catheterization laboratory” Navy Medicine / Public domain (cropped)
- Related lab (Pathophysiology and Pathology Lab): “Charity Hospital Pathology Dept 1889 NOLA” Photographer not credited / Public domain (cropped)
- Related lab (Cognitive Behavioral Physiology Lab): “Brain model 12” John Campbell / CC BY 2.0 (cropped)
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