Ovarian carcinoma with fistula formation to the sigmoid colon and ileum: report of a case.

We describe herein an extremely rare case of clear cell type ovarian carcinoma resulting in fistula formation into the colon and intestine. The patient was a 61-year-old woman in whom a large tumor with extravasation from the sigmoid colon was found by barium enema examination. The tumor was preoperatively diagnosed as left ovarian cancer by angiography which showed the tumor feeder arising from the left ovarian and uterine arteries.