Sonographic appearance of a cholesterol granuloma within a renal epithelioid angiomyolipoma.
We present the sonographic characteristics of a rare case of cholesterol granuloma within a renal epithelioid angiomyolipoma (AML) in a 57-year-old woman. Sonography showed acoustic shadowing distal to the central region of the AML behind a hyperechoic cholesterol, which was hypoattenuating on CT with no contrast enhancement. Microscopic examination confirmed that this central area was a cholesterol granuloma. The patient was treated successfully with radical nephrectomy.
Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China.
Kai-Lun
KL
Cheng
Han
H
Chang
Chung-Ming
CM
Tsai
Yeu-Sheng
YS
Tyan
Teng-Fu
TF
Tsao
D018207:Angiomyolipoma / Q000000981:diagnostic imaging* / Q000601:surgery; D002784:Cholesterol; D005260:Female; D015745:Granuloma, Foreign-Body / Q000000981:diagnostic imaging* / Q000601:surgery; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography
D002784:Cholesterol