B4.071 - Vasculitides Flashcards
clinical features of GPA
males>F
hematuria, proteinuria, sinusitis, pneumonitis pulmonary infiltrate with cavitation
PR3-ANCA (cytoplasm)
pathology of microscopic polyangiitis
arterioles, small arteries
MPO-anca
PR3 - anca
kidney, RPGN, renal failure
skin involvement
pathology of giant cell arteritis
cordlike, nodular vessel with narrow lumen. Granulomatous inflammation, plasma cells, MO, eos, Multinucleated giant cells, fibrosis of media and thick intima
microscopic polyangiitis is associated with what
drugs (penicillin, thiazides), bacteria, viruses, TB, endocarditis
pathology of microscopic polyangiitis
fibrinoid necrosis, acute inflammation, extravasation of RBCs
epidemiology of polyarteritis nodosa &
etiology
men>women
white
immune complex mediated
30% of PAN pts have HBV
what is kawasaki disease
acute, necrotizing vasculitis of incancy and early childhood, with fever, rash, conjuctival and oral lesions (strawberry toungue) and lymphadenitis
what is PR3-ANCA
anti protease 3 (c-ANCA) Seen in granulomatosis iwth polyangiitis, formerly known as Wegeners granulomatosis
generalized form of microscopic polyangiitis
systemic HS
asociated with vascular disease, SLE, RA, SS
HSP, malignancy, dysproteinemis
what are types of medium vessel vasculitis
polyarteritis nodosa kawasaki disease
etiology of vasculitis
Infectious agents HBV, HSV, CMV, Parvovirus serum sickness bacterial antigens autoantibodies: ANCA
clinical features of PAN
young adults
acute, subacute or chronic
varies with affected site (kidney, Ht, liver, GI)
constitutional symptoms, infarcts, necrosis
giant cell arteritis
narrow lumen, inflammation and giant cells
clinical features of buergers syndrome
25-40 yo
men, smokers
intermittend claudication, raynaud syndrome
painful ulcers, gangrene of toes
pathogenesis of beurgers disease
smoking
cell mediated immunity, collagen types 2 and 3
genetic factors, HLA A9, B5
microscopic polyangiitis
what is thromboangiitis obliterans
buerger disease
occlusive inflammatory disease of medium and small arteries in distal arms and legs
what is wegners granulomatosis aka GPA
systemic necrotizing granulomatous vasculitis
who gets buerger disease
smokers, young middle aged men
what is MPO-ANCA
antimyeloperoxidase (p-ANCA) seen in microscopic polyangiitis and Churg Strauss syndrome
treatment of GPA
steroids
what is ANCA
autoantibodies against neutrophil granules, monocyte lysosomes, endothelial cells
what is giant cell arteritis
focal, chronic, granulomatous inflammation of temporal artery
treatment of churg strauss
steroids
giant cell arteritis
granulomas
what is pauci immune
non infectious vasculitis where you dont see any deposition of anything in the vessels
treatment of PAN
steroids and antiinflammatory, immunosuppressive
Treat HBV
what does wegners affect
lungs, kidney, upper respiratory tract
microscopic polyangiitis
note: extravasated RBCs and tons of neutrophils