プロスタグランジンF2α膀注療法により治癒したサイクロフォスファマイドによる出血性膀胱炎

The treatment of cyclophosphamide-induced hemorrhagic cystitis is difficult. We report a successful case of severe cyclophosphamide-induced hemorrhagic cystitis treated with intravesical instillation of prostaglandin F2 alpha. A 32-year-old woman underwent high-dose cyclophosphamide conditioning before the autologous bone marrow transplantation. She developed clot retention which required continuous irrigation with normal saline. The patient had failed to respond to continuous bladder irrigation with saline and intravesical administration of 1% alum. Fifty ml of prostaglandin F2 alpha solution (1 mg in 100 ml normal saline) was instilled into the bladder, with a dwelling time of 60 minutes, three times a day for 5 days. The hematuria cleared completely 3 days after therapy. The only adverse effect was bladder spasm which was controlled with oxybutynin chloride. The success of this therapy suggests that prostaglandin F2 alpha is a safe and useful therapy for hemorrhagic cystitis secondary to cyclophosphamide chemotherapy.