Oncocytic Neoplasm on Renal Mass Biopsy: A Diagnostic Conundrum
May 15th 2016A 56-year-old man presented with a 4.5-cm leftsided renal mass incidentally discovered on an ultrasound performed for workup of lupus nephritis. On dedicated contrast-enhanced magnetic resonance imaging (MRI), the tumor was found to be avidly enhancing.