成人に発生した先天性中胚葉性腎腫の1例

Congenital Mesoblastic Nephroma in Adulthood:A Case Report

　症例は33歳，女性。急性腎盂腎炎の疑いで原因精査中に，左腎上極に直径約8cmの腫瘍を認め，経腹的左腎摘除術を施行した。病理診断は，成人型先天性中胚葉性腎腫であった。

A 33-year-old woman was incidentally found to have a left renal tumor on ultrasonography. Abdominal computerized tomography (CT), magnetic resonance imaging (MRI)and angiography were performed wich disclosed a hypovas-cular tumor in the upper pole of left kidney. A left nephre-ctomy (transabdominal) was performed. The histologic examination showed an adult mesoblastic nephroma. 44adult mesoblastic nephroma cases (21 cases in Japan) have been reported to date.