長谷川 剛¹, 安田 是和², 近藤 恵², 谷口 信行³, 金澤 暁太郎³

Tsuyoshi HASEGAWA¹, Yoshikazu YASUDA², Megumi KONDOH², Nobuyuki TANIGUCHI³, Kyoutaro KANAZAWA³

¹自治医科大学消化器一般外科, 現,胸部外科, ²自治医科大学消化器一般外科, 現,救急医学, ³自治医科大学消化器一般外科, 臨床病理部

¹Department of Cardiovascular and Thoracic Surgery Jichi Medical School Hospital, ²Department of Emergency Medicine Jichi Medical School Hospital, ³Department of Clinical Pathology Jichi Medical School Hospital

キーワード : Adrenal myelolipoma , Computed tomography, Histologic feature, Ultrasonography

An asymptomatic 34-year-old woman was hospitalized for an adrenal tumor that had been discovered unexpectedly on ultrasonographic examination of the abdomen. The tumor mass appeared as a highly echogenic lesion on ultrasonography and had the same CT value as water on CT examination. Physical findings were not typical for any known pathologic entities. Angiographic findings were not significant. The resected tumor, which was reddish in color, fairly soft, and 2 cm in diameter, proved to be a typical myelolipoma on histologic examination. Microscopically, most of the lesion was composed of hypercellular hematopoietic tissue, thus explaining why the CT image was not compatible with the typical myelolipomas so far reported.