| Grade | Endoscopic Appearance | Probability of Rebleeding Without Treatment | Recommended Treatment |
|---|---|---|---|
| Ia | Spurting hemorrhage | 100% | Endoscopic hemostasis |
| Ib | Oozing hemorrhage | 55% (17-100%) | |
| IIa | Visible vessel | 43% (8-81%) | |
| IIb | Adherent clot | 22% (14-36%) | |
| IIc | Flat pigmented spot | 10% (0-13%) | None |
| III | Clean base | 5% (0-10%) |
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