膀胱粘液線維肉腫の1例

Myxofibrosarcoma of the urinary bladder：A case report

　症例は62歳，女性。無症候性肉眼的血尿を主訴に受診した。膀胱鏡で右壁に直径5cm大の腫瘤を認めた。翌日，血尿による膀胱タンポナーデ状態となり，緊急入院した。尿細胞診は陰性であった。病理診断目的のTUR-BTで浸潤性の肉腫と診断し，根治的膀胱全摘除術＋回腸導管造設術を施行した。病理組織診断は粘液線維肉腫であった。退院後CTなどで経過観察したが，術後5か月のCTで腹腔内に10cm大の局所再発を認めた。全身状態が悪化し，術後9か月で死亡した。

　A 62-year-old woman presented with a chief complaint of gross hematuria. Cystoscopy revealed a large mass on the right bladder wall. Through the transurethral biopsy, the tumor was pathologically diagnosed as sarcoma, and radical cystectomy with urinary diversion was performed. The final histopathological diagnosis was myxofibrosarcoma of the urinary bladder. The convalescence was uneventful. Five months later after surgery, however, the abdominal computerized tomography disclosed a large mass in the lower abdomen which was thought to be a local recurrence, and she died nine months later after surgery.（Rinsho Hinyokika 61：843-846, 2007）