[Wegener's granulomatosis: diagnosis and treatment].

Wegener's granulomatosis (WG) is a systemic, necrotizing and granulomatous vasculitis that affects the upper and lower respiratory tract and the kidney. It is the most common antineutrophil cytoplasmic antibodies (ANCA) vasculitis. The diagnosis of WG is based on clinical manifestations, histological findings and the presence of ANCA in serum.