title: Pneumothorax complicating bronchiolitis in an infant.
abstract: Pneumothorax is an uncommon complication of bronchiolitis. The case illustrates an unusual pattern of atelectasis of the right lung with pleural air surrounding the right upper lobe and the remainder of the lung expanded. It is thought that the hyperinflated lung is unable to collapse as a result of the 'ball valve' effect of air trapping.
mesh_terms: D001990:Bronchiolitis, Viral / Q000150:complications / Q000000981:diagnostic imaging*; D004322:Drainage; D005260:Female; D006801:Humans; D007223:Infant; D011030:Pneumothorax / Q000150:complications / Q000000981:diagnostic imaging* / Q000601:surgery; D011859:Radiography