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Volume 10, Pages 1334-1338
Case Study

Giant Renal Angiomyolipoma without Fat Density on CT Scan: Case Report and Review of the Literature

Departments of Pathology and Urology, University of Iowa, Iowa City, IA, USA

Received 8 April 2010; Revised 7 June 2010; Accepted 13 June 2010

Academic Editor: Anthony Atala

Copyright © 2010 Kenneth G Nepple et al.


Giant renal angiomyolipomas have been reported, but typically have the pathognomonic finding of fat density on CT scan. We present the case of a 53-year-old male with a symptomatic, 35-cm, predominantly cystic renal mass without fat density on CT that on nephrectomy was found to be a fat-poor angiomyolipoma with predominantly epithelioid morphology weighing 17.9 kg. Giant renal angiomyolipoma without macroscopic fat density on CT scan is an exceedingly rare occurrence.