Fig. 1From: Nonintubated video-assisted thoracoscopic surgery using adaptive servo ventilation in a patient with severe respiratory dysfunction: a case reportPreoperative images of the patient. a Chest X-ray shows the collapsed lung (red arrows). The left pneumothorax is severe. b Computed tomography shows a bulla of the left upper lobe behind the sternum (red arrow). The bulla was suspected as the cause of the pneumothorax.Back to article page