Fig. 1From: Demystifying the persistent pneumothorax: role of imagingPneumothorax depicted on illustration (a) and frontal chest radiograph (b). The visceral pleural line (marked by black arrows on b) is displaced medially and a lucency (air) intervenes between the chest wall and the outer surface of the right lung. Right lung is partially collapsed. * indicates the deep sulcus signBack to article page