[Malignant fibrous histiocytoma of the prostate capsule].

This report deals with the clinical, ultrasonographical, computertomographical and morphological aspects of the rare malignant fibrous histiocytoma of the prostatic gland. A 80-year-old patient suffered from a fast growing painless tumor of the prostatic area, which, on microscopical examination, proved to be a malignant fibrous histiocytoma. The patient refused surgical treatment and died several weeks thereafter. On autopsy no metastases were found. The diagnosis of a malignant fibrous histiocytoma of the prostatic gland can only be made on microscopical grounds. The differential diagnosis includes a pleomorphic rhabdomyosarcoma or a pleomorphic liposarcoma. The clinical differential diagnosis includes, first of all, a carcinoma of the prostatic gland. Surgery is the therapy of choice. The prognosis of the malignant fibrous histiocytoma of the prostatic gland is poor.