Teenager playing football struck in chest with chest pain

CT of sternoclavicular joint dislocation
CXR AP shows a widened superior mediastinum. Axial CT with contrast of the chest shows a mediastinal hematoma and a right sternoclavicular joint disruption that was displaced posteriorly. Angiogram was negative for aortic injury. Venogram was negative for large vessel venous injury.

The diagnosis was sternoclavicular joint dislocation with the mediastinal hemorrhage thought to be due to small vessel venous injury.