Least likely cause of renal papillary necrosis?: (A) Sickle cell disease, (B) Analgesic nephropathy, (C) Posterior urethral valves, (D) Diabetes with UTI
Answer is C. c. Posterior urethral valves(Ref: Nelson's 20/e p 2562-2567Ghai 8/e p 485-486)Sickle cell disease, use of analgesics and Diabetes are important causes of Renal papillary necrosis.