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Updated: Jun 8, 2026

Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
Published on: June 21, 2024
Sonographic appearance of a cholesterol granuloma within a renal epithelioid angiomyolipoma
Kai-Lun Cheng1, Han Chang, Chung-Ming Tsai
1Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China.
Abstract:
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.
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