腎髄質線維腫の1例

A CASE OF RENAL MEDULLARY FIBROMA

　52歳，女性。人間ドックのエコーにて左腎腫瘍を指摘され当科を受診。CTにて左腎中央部に腫瘍を認めた。左腎動脈造影では乏血管性の腫瘍で，腎生検では悪性所見は認めなかった。以上より左腎腫瘍の診断にて腫瘍核出術を施行した。病理組織学的には腎髄質線維腫であった。術後経過は良好で11か月経た現在再発の所見を認めず外来経過観察中である。

A 52 year-old woman was admitted because of the left renal tumor pointed out by echogram on health check-ups. She was of health and no relevant past medical history. All laboratory results were normal and physical examination was within normal limits. A computer tomo-graphy revealed a 2 cm mass in the left kidney. Aorto-gram and selective left renal angiogram demonstrated no abnormal findings. Biopsy of the mass was performed but mulignant tumor could not be detected. Because malig-nancy could not be entirely excluded, enucleation of the tumor was performed on June, 1995.