title: Renal cell carcinoma containing fat without associated calcifications: two case reports and review of literature.
abstract: With rare exceptions, angiomyolipomas can be distinguished from malignant renal masses by the presence of macroscopic fat within the mass. We report 2 cases in which preoperative imaging with computed tomography was interpreted as diagnostic for angiomyolipoma, but the final pathologic analysis revealed clear cell renal cell carcinoma.
authors.affiliation: Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213, USA. haynm2@upmc.edu
authors.forename: Matthew H
authors.initials: MH
authors.lastname: Hayn
authors.forename: Glenn M
authors.initials: GM
authors.lastname: Cannon
authors.forename: Sheldon
authors.initials: S
authors.lastname: Bastacky
authors.forename: Ronald L
authors.initials: RL
authors.lastname: Hrebinko
mesh_terms: D000273:Adipose Tissue / Q000473:pathology*; D000328:Adult; D002114:Calcinosis; D002292:Carcinoma, Renal Cell / Q000473:pathology*; D005260:Female; D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*