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Gastroenterological and General Surgery Lab
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A surgical department covering clinical care and research on organs from the digestive tract to the blood vessels.
AboutAbout the lab
Pursuing surgical treatment and research through diverse specialty groups
The Gastroenterological and General Surgery Lab provides surgical care for the digestive tract; the liver, spleen, portal vein, and liver transplantation; the breast; the respiratory system; and the blood vessels, and conducts research in both clinical and basic fields.
The department's motto is "Character first, scholarship second," and it says it carries out care and research while adapting to changing times.
It says it can respond flexibly even to diseases that require surgical treatment of multiple organs.
It invites medical students and residents who wish to train as surgeons to get in touch at any time.
Key terms
- Biomarker
- An indicator that serves as a clue for telling, for example, whether a drug therapy will work
- Portal venous circulatory disorders
- Rare diseases in which blood flow through the portal vein, which leads to the liver, becomes abnormal
- Multicenter clinical trial
- A clinical trial in which multiple hospitals work together under the same plan
NewsLab news
View More ↗ResearchResearch themes
The Gastroenterological and General Surgery Lab is divided into groups for the digestive tract; the liver, spleen, portal vein, and liver transplantation; the breast; the respiratory system; and the blood vessels, and conducts clinical and basic research in surgery. It aims to improve treatment outcomes and to clarify how diseases arise and progress.
*Illustrative imageRemote surgery, AI-based assessment, and biomarkers
The lab conducts demonstration experiments on remote surgery using robots and research on using AI to assess surgical and endoscopic images. To deliver drug therapy to the patients best suited for it, it also pursues research centered on biomarkers and is developing methods to detect trace amounts of cancer-derived DNA in the blood.
*Illustrative imageResearch on hepatobiliary and pancreatic cancers and liver transplantation
The lab conducts clinical and basic research aimed at improving treatment outcomes for malignant tumors of the hepatobiliary and pancreatic region, as well as research on improving liver transplant outcomes and extending indications to advanced liver cancer. For splenomegaly and portal venous circulatory disorders, it carries out basic research to identify the causes and clinical research to improve treatment outcomes.
*Illustrative imageBasic and clinical research on breast cancer
Focusing on the molecular biological aspects of breast cancer, the lab carries out experiments at the gene and cell level. Using a database of patients it has treated so far, it also performs analyses to clarify the characteristics of cancer and to select the optimal treatment.
*Illustrative imageResearch on lung cancer and other thoracic malignancies
Focusing on primary lung cancer, the lab carries out gene- and cell-level experiments and AI-based data analysis from the perspectives of tumor immunology and molecular biology. It belongs to collaborative research groups such as JCOG and also takes part in multicenter clinical trials.
MembersFaculty
The members of the Gastroenterological and General Surgery Lab consist of faculty, surgical residents, and graduate students.As of 2026
- ProfessorTomoharu Yoshizumi
- Associate ProfessorShinji Itoh
- Associate ProfessorTomosuke Takenaka
- LecturerKoji Ando
- LecturerTakeo Toshima
- LecturerKoichi Morisaki
- Concurrent LecturerTomonori Nakanoko
- Concurrent LecturerYuichi Hisamatsu
- Assistant ProfessorTakashi Motomura
- Assistant ProfessorShohei Yoshiya
- Assistant ProfessorHajime Otsu
- Assistant ProfessorYasuo Tsuda
- Assistant ProfessorKentaro Inoue
- Assistant ProfessorKazuki Takada
- Assistant ProfessorTaichi Matsubara
- Assistant ProfessorTetsuro Kawazoe
- Assistant ProfessorFumihiko Kinoshita
- Assistant ProfessorKyohei Yukawa
- Assistant ProfessorNorifumi Iseda
- Assistant ProfessorShun Kurose
- Professor (Department of Advanced Biomedical Engineering Clinical Practice)Eiji Oki
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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: “Hybrid operating theatre gemelli rome” Pfree2014 / CC0 (cropped)
- Remote surgery, AI-based assessment, and biomarkers: “Telesurgery1” Trevorjchapman / CC BY-SA 4.0 (cropped)
- Research on hepatobiliary and pancreatic cancers and liver transplantation: “Left Liver Transplant” Aphelpsmd / CC BY-SA 4.0 (cropped)
- Basic and clinical research on breast cancer: “Magnification view mammography” Cerevisae / CC BY-SA 4.0 (cropped)
- Research on lung cancer and other thoracic malignancies: “Boy chest x-ray pic” Mahdi2ha / CC BY-SA 4.0 (cropped)
- Related lab (Respiratory Medicine Lab): “X-ray of lobar pneumonia” Mikael Häggström, M.D. Author info - Reusing images- Conflicts of interest: None Mikael Häggström, M.D.Consent note: Written informed consent was obtained from the individual, including online publication. / CC0 (cropped)
- Related lab (Otorhinolaryngology Lab): “Oticon hearing aid top view” Bastique / CC BY 4.0 (cropped)
- Related lab (Advanced Emergency and Disaster Medicine Lab): “Ambulance Laquinitinie Cameroun” Happi Raphael / CC BY-SA 4.0 (cropped)
- Related lab (Clinical Laboratory Medicine Lab): “Europa Clipper's Mass Spectrometer” NASA/JPL-Caltech / Public domain (cropped)
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