From: Caustic ingestion in adults: The role of endoscopic classification in predicting outcome
Grade 0 | Normal examination |
Grade 1 | edema and hypermia of the mucosa |
Grade 2a | Superficial ulceration, erosions, friability, blisters, exudates, hemorrhages, whitish membranes |
Grade 2b | Grade 2a plus deep discrete or circumferential ulcerations |
Grade 3a | Small scattered areas of multiple ulceration and areas of necrosis with brown-black or greyish discoloration |
Grade 3b | Extensive necrosis |