Rare type of bladder cancer: malign fibrous histiocytoma.

Malignant fibrous histocytoma (MFH) is the most common soft tissue sarcoma in adults. Urinary tract is a very rare location for MFH. Involvement of the bladder is more common in males and at the 6th decade of life. A case of MFH of the bladder with poor prognosis is presented. Prognostic factors for MFH are tumor grade, amount of invasion, age, tumor size, and histological type. Survival rate is very low and 3-year disease specific survival is approximately 40%.