2B)

Figure 2: Chest computerized tomography (CT) scans: 2A) initially revealing a 22-mm button battery lodged in the proximal esophagus associated with fistula to the left main bronchus; chronic mediastinitis; right lung consolidation of the medial and inferior lobes; left main bronchus stenosis, cystic and varicose bronchiectasis, and complete lung parenchyma atelectasis, conditioning left mediastinal deviation; and left nonfibrous pleural effusion. 2B) ten months after fistula closure, CT exhibiting persistent fibrosis of the left lung parenchyma, with multiple varicose bronchiectasis and left mediastinal deviation; a right lung with apparently preserved parenchyma and moderate expansion.