Formerly known as bronchiolitis obliterans organizing pneumonia (BOOP). Noninfectious pneumonia characterized by inflammation of bronchioles and surrounding structure.
Secondary → caused by chronic inflammatory diseases (eg, RA) or medication side effects (eg, amiodarone).
⊝ sputum and blood cultures, often responds to steroids but not to antibiotics.
☆patchy fibrosis with fibroblastic plugs in the alveolar sacs and ducts, often extending into ajacent alveoli in a butterfly pattern
respiratory
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