[Mesenteric fibromatosis with ureteral stenosis: a case report].

We report a case of mesenteric fibromatosis with ureteral stenosis arising in a 31-year-old man who presented at our hospital with right flank pain. Radiographic examinations revealed a right pelvic solid tumor with stenosis of the right ureter at the level of pelvic brim. The patient underwent an operation. The tumor was excised with resection of the affected segment of ileum, sigmoid colon and nephrouretectomy. Histological diagnosis was mesenteric fibromatosis. He has been free of tumor for one year.