Idiopathic BOOP
Post infection BOOP
Drug or medication BOOP
Focal nodular BOOP
Rheumatological or connective tissue BOOP
Bone marrow transplantation BOOP
Lung transplantation BOOP
AIDS or HIV infection BOOP
Radiation therapy BOOP
Cancer and lymphoma-related BOOP
Seasonal BOOP
Inflammatory bowel disease BOOP
Tryptophan-related BOOP
Textile printing dye BOOP

Lung transplantation BOOP

The characterization of BOOP in patients with lung transplantation continues to evolve. At first it was thought to be rare and related to infections, but reports have indicated that BOOP may occur in 10 to 25 percent of lung recipients.

The outcome in lung transplant recipients is less favorable than the 'idiopathic' form. The lung transplant BOOP may result from airway injury either from acute lung rejection or an ongoing infection.