Table 3 Common causes of small vessel vasculitis of the lungs (pulmonary capillaritis)

Isolated pauci-immune pulmonary capillaritis^#

Systemic lupus erythematosus

Granulomatosis with polyangiitis^#

Microscopic polyangiitis^#

Goodpasture’s syndrome

Rheumatiod arthritis

Polymyositis

Primary antiphospholipid syndrome

Scleroderma

Idiopathic pauci-immune glomerulonephritis^#

Henoch–Schoenlein purpura

Immunoglobulin A nephropathy

Behçet’s syndrome

Hypersensitivity vasculitis

Eosinophilic granulomatosis with polyangiitis (Churg–Strauss)^#

Essential cryoglobulinaemia