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': 'Necrotizing papillitis may be seen in all of the following conditions except - \nSelect and explain. \nA. Sickle cell disease, B. Tuberculous pyelonephritis, C. Diabetes mellitus, D. Analgesic nephropathy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Necrotizing papillitis is the other name of acute papillary necrosis. When infection of renal pyramids develop in association with vascular diseases of the kidney or with urinary tract obstruction, renal papillary necrosis is likely to result.\nIn the given options, DM is the commonest and TB is the rarest cause of papillary necrosis\n• Diabetes mellitus\n• Sickle cell disease\n• Chronic alcoholism\n• Vascular disease\n• Analgesic abuse nephropathy', 'role': 'assistant'}]