Granuloma is seen in all except -: (A) Giant cell aeritis, (B) Microscopic polyangitis, (C) Wegner's granulomatosis, (D) Churg-strauss disease
Answer is B. Ans. is 'b' i.e., Microscopic polyangitisIn microscopic polyangitis, granuloma are absent.o There are two types of inflammation in the wall of vessels in systemic vasculitis ?I. Granulomatous inflammation --> characterized by formation of granuloma in vessel wall.2. Necrotizing inflammation characterized by fibrinoid necrosis in the vessel wall.Vasculitis with granulomatous inflammation o Giant cell aeritiso Takayasu's diseaseo Wegner's granulomatosiso Churg strauss syndromeVasculitis with necrotizing inflammationPolyaeritis nodosaChurg strauss syndromeWegner's granulomatosisMicroscopic polyangitisNote - Wegner's granulomatosis and churg strauss syndrome have feature of both granulomatous inflammation (predominant) and necrotizing inflammation.