The commonest cause of Renal papillary necrosis -
Ans- C Most common cause is DM. Renal papillary necrosis is almost always a/w with pyelonephritis(Pyelonephritis is caused by DM, Analgesic, SCA) So MCC is DM&MC association is Analgesic Nephropathy.
Analgesic nephropathy
Pyelonephritis
Diabetes
Sick cell anemia
Chronic Kidney Disease and Uremia