Surgical Fellowship, 1999-2000

Following his KAC Surgical Oncology Fellowship, Martin Weiser gained additional training in minimally invasive colorectal surgery before joining the staff at MSKCC in 2001. His practice involves surgical treatment of primary, metastatic, and recurrent cancers of the colon, rectum, anus, and appendix, with a focus on preservation of sphincter function and maintenance of bladder and sexual function through nerve-sparing surgical techniques. His expertise is in laparoscopic surgery, and he is a leader in the current laparoscopic rectal cancer prospective randomized trial. Dr. Weiser also conducts ongoing clinical research in the diagnosis and treatment of colon, rectal and anal cancers. A focus of his research is the improvement of staging methods for predicting outcomes after surgery. He also leads funded laboratory research targeting mechanisms of metastasis. As well, he monitors the MSKCC Colorectal Cancer Database, tracking patient outcome and ensuring quality of care.

Dr. Weiser was recently Program Chair for the American Society of Colon and Rectal Surgeons 2008 Annual Meeting/Tripartite. A member of the GI subcommittee of the CALGB, the American Joint Committee on Cancer staging committee, and the National Comprehensive Cancer Network, he took a principal leadership role in the national collaborative study focused on implementing a multi-institutional colorectal cancer database to evaluate patterns of care, concordance with treatment guidelines, and patient outcomes. A coauthor of many papers and book chapters on laparoscopic surgery, colon and rectal cancers, rare anorectal tumors, cancer staging, predictors of outcome after surgery, and the biological mechanisms of tumor metastasis, he has lectured nationally and internationally on the management of colorectal/anal cancer and minimally invasive surgery. He was recently promoted to Associate Attending at MSKCC.