Phyllodes tumor of the prostate.

A 67-year-old man presented with gross hematuria. Magnetic resonance imaging showed a 900-mL cystic mass, in continuity to the basal left side of the prostate, that laterally compressed the bladder. The patient underwent tumor resection, and the histologic diagnosis was benign cystic Phyllodes tumor of the prostate. Phyllodes tumor of the prostate is a rare tumor composed of hyperplastic and neoplastic glandular-stromal proliferation. The tumor grade has an effect on the prognosis, although if not completely resected, even low-grade tumors can recur, metastasize, or differentiate into sarcoma.