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
Papillary necrosis is seen in all except: March 2012 
Select and explain. 
A. Sickle cell anemia, B. Analgesic nephropathy, C. Diabetes mellitus, D. Chronic alcoholism
D: Chronic alcoholism
Answer: D: Chronic alcoholism 
Explanation: Ans: D i.e. Chronic alcoholism Papillary necrosis is not specific for analgesic nephropathy. It is also seen in diabetes mellitus, as zvell as in urinary tract obstruction, sickle cell disease or trait, and focally in renal tuberculosis.