良性血管腫瘤可以在身體任何地方發生，但生長在膀胱卻甚為罕見，回顧所有文獻報告，其病例報告不超過100例。其發生之病理原因仍不甚清楚，但可能與先天性或遺傳有關。最常見的症狀為血尿，初期發現時可利用膀胱鏡經尿道電燒或雷射治療；但若腫瘤過大時，則建議用開放性手術治療。在此提出之個案報告為一位二十二歲女性，這十多年來出現間斷性血尿及排尿不適，困擾病患多年。後經診斷為大型罕見性膀胱血管腫瘤，最後接受膀胱部份切除術及膀胱血管腫瘤切除手術，術後追蹤恢復良好且無併發症或復發情形。

We present a case of a 22-year-old female who had suffered from painless gross hematuria and intermittent dysuria since she was 10 years old. A cystoscopic examination revealed a hemangioma occupying most of the dome of the urinary bladder. Surgical treatment with a partial cystectomy and excision of the urinary bladder hemangioma was then performed. The specimen measures about 13×8×6 cm and was sent for pathologic confirmation. The patient recovered smoothly with no complications encountered.