In takayasu aeritis there is

Takayasu aeritis affects the aoa, its major branches and occasionally the pulmonary aeries. The typical age at onset is 25-30 years, with an 8 : 1 female-to-male ratio. It has a worldwide distribution but is most common in Asia. Takayasu aeritis is characterised by granulomatous inflammation of the vessel wall, leading to occlusion or weakening of the vessel wall. It presents with claudication, fever, ahralgia and weight loss. Clinical examination may reveal loss of pulses, bruits, hypeension and aoic incompetence. Investigation will identify an acute phase response and normocytic, normochromic anaemia but the diagnosis is based on angiography, which reveals coarctation, occlusion and aneurysmal dilatation. Treatment is with high-dose glucocoicoids and immunosuppressants, as described for ANCA-associated vasculitis. With successful treatment, the 5-year survival is 83%. Ref - Davidsons 23e p 1041