Bronchiolitis obliterans organizing pneumonia secondary to amiodarone: clinical, radiological and histological pattern.

The most common lung tissue reaction to amiodarone toxicity is a nonspecific pulmonary chronic interstitial pneumonia. In a minority of patients diffuse alveolar damage, alveolar haemorrhage or bronchiolitis obliterans organizing pneumonia (BOOP) is encountered. We report the case of a patient with clinical, functional, radiological and histological signs of BOOP secondary to amiodarone. The condition was partially reversible after suspending drug treatment, and resolved after corticosteroid treatment without relapse after a 14 month follow-up.