Fig. 2

CT classification of corrosive injuries of the esophagus. a Grade I—homogenous enhancement of the esophageal wall while wall edema and mediastinal fat stranding are absent. b Grade IIa—internal enhancement of the esophageal mucosa and hypodense aspect of the esophageal wall which appears thickened, concomitant enhancement of the outer wall confers a “target” aspect. c Grade IIb—fine rim of external wall enhancement, the necrotic mucosa does not enhance anymore and fills the esophageal lumen which shows liquid density. d Grade III injuries show the absence of post-contrast wall enhancement