Which vasculitis affects both aerial and venous system: (A) Wegeners granulomatosus, (B) PAN, (C) Behcets disease, (D) Kawsaki disease
Answer is A. Small vessel vasculitis affects aerioles, capillaries and venules. Of the options given, the only small vessel vasculitis is Wegener granulomatosis. (Ref: Robbins 8/e p511)