Colon stenosis in a patient with ulcerative colitis as a manifestation of mixed müllerian tumor of the peritoneum.

We report the case of a 56-year-old woman followed for ulcerative colitis since 1987. In 1993, she underwent a total hysterectomy with bilateral salpingo-oophorectomy. In 1996, a narrowing of the lumen at 20 cm of the anal margin was observed and she was put under endoscopic observation. In 1998, a mass in the stricture was observed, with significant narrowing of the lumen. Histologic examination revealed a biphasic tumor with features of malignant mixed mullerian tumor. Five years after surgery and chemotherapy with paclitaxel and carboplatinum, the patient remains well.