特発性後腹膜血腫の1例

Idiopathic Retroperitoneal Hematoma:A Case Report

　30歳の女性に，特に誘因なく発症した後腹膜血腫を経験した。左腎の上部に血腫が存在し，当初左副腎腫瘍の自然破裂を疑って血腫を摘出したが，左副腎は血腫壁上部に付着しており，異常は認められなかった。左腎と左副腎の間に発生した後腹膜血腫と診断したが，その原因は不明であった。

We experienced a case of nontraumatic retroperitoneal hematoma. A 30-year-old female suffered from sudden abdominal pain. Hematoma was located over the upper pole of right kidney. We removed the hematoma, but the bleed-ing source was not identified not only by preoperative angiography but also by operative findings. Idiopathic retroperitoneal hematoma is very rare. Only 11 cases were reported previously in Japan.