Idiopathic small vessel vasculitis
Granulomatosis with polyangiitis (Wegener's)
Churg-Strauss syndrome
Microscopic polyangitis
Primary immune complex-mediated vasculitis
Goodpasture syndrome
Henoch-Schonlein purpura
Secondary vasculitis
Systemic lupus erythematosus
Rheumatoid arthritis
Mixed connective tissue disease
Polymyositis/Dermatomyositis
Acute lung transplant rejection
Drug induced (ie. chemotherapy, amiodarone, propylthiouracil)
ARDS
Multilobar Pneumonia
Coagulopathy
Pulmonic veno-occlusive disease
Mitral stenosis
Granulomatosis with polyangiitis (Wegener's)
Churg-Strauss syndrome
Microscopic polyangitis
Goodpasture syndrome
Henoch-Schonlein purpura
Systemic lupus erythematosus
Rheumatoid arthritis
Mixed connective tissue disease
Polymyositis/Dermatomyositis
Diffuse alveolar hemorrhage
Idiopathic small vessel vasculitis
Immersion pulmonary edema
Granulomatosis with polyangiitis 
Flash pulmonary edema
Churg-Strauss syndrome
Reexpansion pulmonary edema
Microscopic polyangitis