Pathology Bronchiolitis obliterans with organizing pneumonia (BOOP) is characterized histologically in the lung by A Asteroid bodies in giant cells within bronchioles B Loose fibrous tissue within bronchioles and alveoli C Multiple rheumatoid nodules within the interstitial tissue D Numerous eosinophils within the walls of the alveoli 💡 Explanation Bronchiolitis obliterans with organizing pneumonia (BOOP) is characterized histologically in the lung by ✓ Correct Answer: B. Loose fibrous tissue within bronchioles and alveoli