Surgical Oncology
MD, PhD, Professor, Department of Surgical Oncology, The University of Tokyo, Tokyo, Japan.
Dr. Soichiro Ishihara is the Professor of the Department of Surgical Oncology, The University of Tokyo, and the chief of the Department of Colorectal Surgery and Vascular Surgery of the University Hospital. He graduated from the University of Tokyo School of Medicine in 1992, and obtained Ph.D. in Surgery, The University of Tokyo Graduate School of Medicine in 2001. Before he came back to The University of Tokyo as a professor in 2018, he was the Professor of the Department of Digestive Surgery, The International University of Health and Welfare.
He is the author of more than 340 scientific papers published in peer-reviewed journals, and is the editor-in-chief of the Journal of the Anus, Colon and Rectum, and a member of the editorial board of Diseases of the Colon & Rectum, and Surgery Today.
He is a member of the committees of the Japanese Society for Cancer of the Colon and Rectum (JSCCR) Guidelines for the Treatment of Colorectal Cancer, and the Clinical Practice Guidelines for Peritoneal Malignancy. He is also the chairman of the JSCCR task force appointed to develop guidelines for the treatment of inflammatory bowel diseases (IBD) -associated intestinal cancers.
His main professional and scientific interests focus on surgical oncology, colorectal surgery, and minimally invasive surgery including laparoscopic and robotic surgeries. He is also specialized in IBD, especially of diagnosis and surgical treatment of IBD-associated intestinal cancers.
In recent years, the debate between upfront surgery and neoadjuvant therapy has become a cornerstone in the management of rectal cancer. Choosing the optimal path requires a deep understanding of varying international guidelines and the precision offered by modern surgical techniques. Thanks to the integration of laparoscopic and robotic-assisted systems, surgeons can now achieve higher levels of precision in Local Axial Resection (LAR), adhering to rigorous clinical standards to improve patient quality of life.
With Johnson & Johnson MedTech
Published
Feb 2026
Soichiro Ishihara explains lateral pelvic lymph node metastasis in rectal cancer: clinical significance, the Japanese approach and selective dissection.
With Japan Society For Endoscopic Surgery
Published
Apr 2022
Help your network discover Dr. Soichiro Ishihara's clinical expertise.
