Pleuropulmonary manifestations of systemic vasculitis are common, poly
morphic and of ambiguous significance: the same pulmonary lesion may r
eveal a specific manifestation of vasculitis as well as a therapy-indu
ced complication, especially infection which may favor per se a flare-
up. Two questions will be successively studied: what are the pleuropul
monary characteristics of Wegener's granulomatosis, Churg-Strauss synd
rome, periarteritis nodosa, Behcet's disease, Takayasu's disease and t
emporal arteritis ? What are the major adverse effects that may occur
in the course of a treated systemic vasculitis?