A Case of Acute Esophageal Necrosis from Unruptured Thoracic Aortic Aneurysm

Table 1

Staging of AEN based on endoscopy findings.

Stage	Endoscopy findings
Stage 0	Prenecrotic viable esophagus
Stage 1	Diffuse, circumferential, black-appearing esophageal mucosa with occasional yellow exudates
Stage 2	Residual black areas in the esophagus, thick white exudates composed of necrotic debris covering friable pink mucosa
Stage 3	Normal endoscopic appearance, granulation tissue presents only microscopically