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Penetrating injury to the left anterior chest wall between the first and second ribs at the costochondral junctions. A small contrast outpouching from the posterior aspect of the proximal descending thoracic aorta (4 cm distal to the left subclavian artery origin) at the level of the embedded pellet appears to represent a vessel infundibulum. However, given extensive periaortic hematoma, a small transmural aortic injury cannot be excluded.
