Chest X-ray from the fourth postoperative day: Twisted image with lateralization of the mediastinum to the left. Inserted tracheal cannula, the tip of which projects approximately 6.5 cm cranially to the carina onto the tracheal lightening band. The left dome of the diaphragm is not sharply delineated. Marked areal compression left-retrocardially. Prominent pulmonary hili on both sides as well as somewhat blurred vascular markings. In the supine position, no evidence of a pneumothorax. Assessment: Compaction retrocardially on the left side, consistent with a pneumonic infiltrate. Mild PV congestion.