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Corrosive injury of gastrointestinal tract based on modified endoscopic mucosal injury grading scale.
| Severity of corrosive injury | |||||
|---|---|---|---|---|---|
| 0 | I | IIa | IIb | III | |
| Esophagus (n = 108) | 1 | 9 | 9 | 46 | 43 |
| Stomach (n = 108) | 3 | 13 | 13 | 21 | 58 |
| Duodenum∗ (n = 78) | 21 | 24 | 8 | 12 | 13 |
*Operators refrained from forcing the scope through the pylorus in 30 cases because of severe gastric damage.
