Sonographic appearance of a cholesterol granuloma within a renal epithelioid angiomyolipoma

Authors

  • Kai-Lun Cheng MD,

    1. Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    2. School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
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  • Han Chang MD,

    1. Department of Pathology, China Medical University Hospital, No. 2, Yuh-Der Road, Taichung, Taiwan, 40447, Republic of China
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  • Chung-Ming Tsai MD,

    1. Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    2. School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
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  • Yeu-Sheng Tyan MD, PhD,

    1. Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    2. School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    3. School of Medicine, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
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  • Teng-Fu Tsao MD

    Corresponding author
    1. Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    2. School of Medical Imaging and Radiological Sciences, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
    3. Department of Veterinary Medicine, National Chung Hsing University, No.250, Kuo Kuang Road, Taichung, Taiwan 402, Republic of China
    • Department of Medical Imaging, Chung Shan Medical University Hospital, No. 110, Section 1, Chien-Kuo N Rd., Taichung, Taiwan 402, Republic of China
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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. © 2010 Wiley Periodicals, Inc. J Clin Ultrasound, 2010

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