Most common organ affected in polyarteritis nodosa?: (A) Lungs, (B) Kidneys, (C) Pancreas, (D) Spleen
Answer is B. Ans. b (Kidneys). (Ref. Harrisons Medicine, 18th/ Chapter 326. The Vasculitis Syndromes)PAN is necrotising vasculitis of small and medium sized arteries.Descending order of frequency of involvement of organs in PAN is# Kidney# Heart# Liver# GIT# Muscle# Pancreas# Testis# CNS# Skin