Fat-Containing Renal Cell Carcinoma Mimicking Angiomyolipoma: A Radiological and Histopathological Diagnostic Challenge

A well-marginated fat-containing renal lesion gives strong suspicion of renal angiomyolipoma (RAML) that usually requires no surgical intervention. Radiologically, renal masses with a large amount of fat can rule out renal cell carcinoma (RCC). Calcifications are very infrequent in RAML. However, th...

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Bibliographic Details
Published inCurēus (Palo Alto, CA) Vol. 12; no. 1; p. e6721
Main Authors Yousaf, Amman, Nabi, Usman, Hussein, Mohamed Lameir, Twair, Akram, Gashir, Mohamed Ben
Format Journal Article
LanguageEnglish
Published United States Cureus Inc 21.01.2020
Cureus
Subjects
Abdomen
Case reports
Histopathology
Kidney cancer
Medical diagnosis
Medical imaging
Morphology
Oncology
Prostate
Radiology
Tumors
Ultrasonic imaging
Urogenital system
Urology
angiomyolipoma
renal cell carcinoma
benign renal tumors
calcifications
malignant renal tumors
histopathology
case report
fat-containing renal tumors
imaging
surgical excision
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Summary:A well-marginated fat-containing renal lesion gives strong suspicion of renal angiomyolipoma (RAML) that usually requires no surgical intervention. Radiologically, renal masses with a large amount of fat can rule out renal cell carcinoma (RCC). Calcifications are very infrequent in RAML. However, the presence of calcifications in a fat-containing renal lesion is highly suggestive of RCC. These lesions should undergo surgical resection and histopathological assessment to reach the right diagnosis and avoid poor outcomes if diagnosed late. We present a case of bilateral renal tumors, in which one of them radiologically contained abundant fat with calcifications on CT scan, which was confirmed to be an RCC on histopathological examination.
ISSN:2168-8184
2168-8184
DOI:10.7759/cureus.6721