Abstract
The colon is the very rare site of metastasis of breast cancer. We emphasize that the intestine should be considered as a possible metastatic lesion of the advanced breast cancer from our experience.
A 56-year-old women underwent a standard radical mastectomy for a right breast tumor on July 1990. Pathological diagnosis was infiltrating ductal breast cancer: T1n1 b m0-stage II. The patient was treated with 51 Gy local radiotherapy and chemoendocrinotherapy after surgery as an outpatient. Around February 1991, a tumor marker started to increase. Careful examination could not detect any evidence of recurrence of the breast cancer. However, multiple enlargment of para-aortic lymphnodes was found by CT, and a colon cancer was suspected by barium enema in January 1992. Right hemicolectomy was performed. Histologically, it was found that the breast cancer metastasized to the ascending colon.
