[Pelvic fibromatosis: a case with clinical urologic features].

We report on a patient with chronic prostate disease diagnosed as having a pelvic desmoid tumor (abdominal fibromatosis localized to the pelvis) whose presenting features were those of complete acute urinary retention. The findings on initial examination led us to suspect a prostate neoplasm which, however, was discarded by the results of the radiographic work up. The clinical and pathologic findings are presented and attention is drawn to the possibility that these mesenchymal neoplasms can have urological presenting symptoms and signs.