Role of endoscopy in caustic injury of the esophagus

Figure 1 Modified Zargar's endoscopic classification of mucosal injury caused by ingestion of caustic substances. A: Edema and erythema; B: Erosions and ulcers; C: Circumferential ulceration; D: Scattered areas of esophageal necrosis; E: Extensive esophageal necrosis.

Figure 2 Endoscopic view suggested extensive mucosal necrosis of the esophagus -Grade IIIb modified Zargar's endoscopic classification, but CT scan revealed mucosal enhancement of the esophagus indicating tissue viability. A: Endoscopic view; B: Computerized tomography scan. Notably, esophageal lumen is marked with asterisk.

Figure 3 Various types of dilator. A: Maloney-Hurst dilator; B: Savary-Gilliard dilator; C: Balloon dilator; D: Balloon dilator during dilatation seen with fluoroscopy.