This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
[{'content': 'Oncocytic carcinoma arises from - \nSelect and explain. \nA. Perivascular, B. Glomerulus, C. Loop of henle, D. Collecting duct', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Oncocytoma\n• Arises from the intercalated cells of collecting ducts.\n• Epithelial tumor composed of large eosinophilic cells having small, round, benign-appearing nuclei that have large nucleoli.\n• Ultrastructurally the eosinophilic cells have numerous mitochondria.', 'role': 'assistant'}]