Thoracic aortic transection is seen at the aortic isthmus. This originates approximately 5 mm distal to the origin of the left subclavian artery and extends approximately 3 cm along the length of the descending aorta. The contour abnormality of the aorta is seen predominantly posteriorly, but also extends into the lateral and anterior walls of the aorta. Soft tissue stranding of the mediastinum centred around the aortic isthmus suggestive of a mediastinal haematoma secondary to associated rupture. No active contrast extravasation identified. No haemopericardium. Normal opacification of the ascending aorta and branches of the aortic arch.
Small high density left pleural effusion, likely a haemothorax in the clinical context. Tiny locules of extrapleural gas seen bilaterally consistent with a tiny bilateral pneumothoraces. The lungs and pleural spaces are otherwise clear.
Multiple left-sided rib fractures (5-8), without evidence of a flail segment. No other fractures or dislocations.