今井 幸子¹, 大石 元¹, 平井 都始子¹, 本田 伸行¹, 村田 敏彦¹, 吉川 公彦¹, 打田 日出夫¹, 藤田 いずみ², 横井 浩²

Yukiko IMAI¹, Hajime OHISHI¹, Toshiko HIRAI¹, Nobuyuki HONDA¹, Toshihiko MURATA¹, Kimihiko KICHIKAWA¹, Hideo UCHIDA¹, Izumi FUJITA², Hiroshi YOKOI²

¹奈良県立医科大学放射線科, ²日生病院

¹Department of Radiology, Nara Medical University, ²Nissei Hospital

キーワード : Angiomyolipoma, US, Hyperechoic mass, Renal cell carcinoma, Tuberous sclerosis

US and CT findings were comparatively evaluated for 24 noduls detected in 15 patients with renal angiomyolipoma (AML) who were so diagnosed by angiographic, CT and histological examinations.
A hyperechoic patterns that characterizes the US findings of AML reflects the adipose component of the tumor. CT faciliated the diagnosis of AML, since a fat enriched tumor was visualized as a marked hyperechoic mass. However, a tumor with low fat component generally appeared as a hypoechoic mass for which definitive diagnosis even with an aid of CT was difficult. However, these cases had bilateral and multiple AML and all complicated with tuberous sclerosis.