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Zargar classification and its corresponding endoscopic description
| Zargar classification | Description |
| Grade 0 | Normal mucosa |
| Grade I | Edema and erythema of the mucosa |
| Grade IIA | Hemorrhage, erosions, blisters, superficial ulcers |
| Grade IIB | Circumferential lesions |
| Grade IIIA | Focal deep gray or brownish-black ulcers |
| Grade IIIB | Extensive deep gray or brownish-black ulcers |
| Grade IV | Perforation |
