CT confirms the x-ray findings. Extensive multifocal pulmonary contusion with extensive lung consolidation. Moderate sized residual left anterobasal pneumothorax accounting for the deep sulcus sign on x-ray. Small residual right pneumothorax. Interestingly, there is also pneumopericardium which is a relatively rare traumatic finding, especially in the absence of pneumomediastinum elsewhere. Right clavicle fracture but no other fractures are seen.