Bronchiolitis obliterans with organizing pneumonia

: We present a typical case of Obliterant Bonchilitis with Organizative Pneumonia in a 73-years-old man. The diagnosis was established through minithoracotomy. Treated with high dosage of methylprednisolone, the clinical-radiological evolution was satisfactory. It is very important to know and correctly diagnose this entity, given its excellent therapeutical response.