<prompt> Causes of papillary necrosis in kidney areis:Diabetes mellitusSickle cell diseaseAnalgesic abuseAll  <response>: Ans. d All. Ref. Robbins, Pathology, 6thpg.924CAUSES OF PAPILLARY NECROSIS mnemonic--POSTCARD: Pyelonephritis Obstructive uropathy Sickle cell disease TB and trauma, tubular necrosis, transplant rejection Cirrhosis alcoholism, coagulopathy Analgesics Renal vein thrombosis Diabetes, Dehydration 