Hypersensitivity vasculitis usually involve: (A) Aerioles, (B) Post capillary venules, (C) Capillaries, (D) Medium sized aeries
Answer is B. Refer robbins 9/e p510, 8/e 515 Harrison 7/2128 Direct quote from Harrison 18th /2798; Postcapillary venules are most commonly involved vessels. Capillaries and aerioles are less frequent involved