Oncocytic carcinoma arises from -: (A) Perivascular, (B) Glomerulus, (C) Loop of henle, (D) Collecting duct
Answer is D. Oncocytoma
• Arises from the intercalated cells of collecting ducts.
• Epithelial tumor composed of large eosinophilic cells having small, round, benign-appearing nuclei that have large nucleoli.
• Ultrastructurally the eosinophilic cells have numerous mitochondria.