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Various supine chest radiography and chest computed tomography findings of occult pneumothorax in Blunt chest trauma. (A,C,E) Arrows show the subcutaneous emphysema, rib fracture and lung contusion in supine chest radiography. (B,D,F) Arrows show the subcutaneous emphysema, rib fracture, lung contusion and traumatic pneumothorax in same patient. AP, anterior-posterior; Lt, left; R, right.
