Pulmonary vasculitis: the spectrum of radiological findings

Pulmonary vasculitis includes various disease entities with a wide range of clinical presentations and overlapping imaging features. Radiological find ings of vasculitis in the angiitis-granulomatosis group are nodular and pat chy opacities, whereas the principal feature of those diseases causing wide spread capillaritis is diffuse air space consolidation. Aneurysms or stenos es of pulmonary arteries are seen in patients with Takayasu arteritis or Be hcet's disease.