Fig. 2

Chest radiography and computed tomography findings from Patient 2. a Chest radiography at the time of admission did not reveal any traumatic abnormalities. b Chest radiography 3 days after the admission revealed decreased left lung permeability. c Contrast-enhanced computed tomography from after the insertion of a chest drainage tube revealed extravasation of the contrast agent behind the left sixth rib (arrow), a hematoma at the mediastinum (arrowhead), and chest cavities without any obvious rib fractures