Urinary bladder hemangiomas are rare, accounting for 0.6% of the urinary bladder tumors. Hemangioma is considered arising from embryonic stem cells of an angioblastic lineage. A 3-year old boy presented with hematuria. He had past operative history of excision of extensive lymphatic malformation involving retroperitoneum, pelvis and upper thigh. Computed tomography scan of abdomen and pelvis with contrast revealed a large soft tissue mass arising from the dome of the bladder. Partial cystectomy was done. Histopathology confirmed the mass as cavernous hemangioma of urinary bladder.