Vaginal metastasis of colon cancer.

True vaginal metastases from colonic cancer are exceedingly rare. This often signals an ominous prognosis. More frequently the vagina is synchronously involved by direct contiguous spread from the colonic lesion. We present a case of sigmoid carcinoma with true metastasis to the vagina that was discovered after an interval of 3 weeks when vaginal discharge became evident. To our knowledge, there are only two other papers in the English language previously documenting this phenomenon.