Cavernous hemangioma of the urinary bladder in an 8-year-old child.

An 8-year-old boy was admitted to Ehime University Hospital, Ehime, Japan, for the further investigation of a 5-month episode of gross hematuria accompanied by lower abdominal pain. Magnetic resonance imaging revealed a solid tumor measuring 3 cm in diameter of the bladder wall. Cystoscopy demonstrated a red, wide-based, nodular tumor situated on the dome of the bladder. Histological examination of tissue taken at hot biopsy showed fibrolipoma. In consideration of potential malignancy, a partial cystectomy was carried out after informed consent was given. Histological examination of the resected specimen showed it to be cavernous hemangioma.