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Fig. 2E. —24-year-old woman who attempted suicide by ingestion of acid. Bronchoscopy showed necrosis of posterior wall of trachea with tracheal ulceration and necrosis of carina. Note that on CT bronchoscopy, posterior aspect of trachea is at top of image because observers look at trachea from above. CT bronchogram shows transverse ulceration of carina (arrow) more obviously than axial CT scan (C).