| Visible vessel | |
 |
 |
| Each figure shows a hemorrhage grade Forrest IIa. The visible vessel of the left figure is 3 mm in size (Forrest IIaG), to the right the vessel measures 1mm (Forrest IIag ). Stumpf = stump (of a visible vessel) Koagel = clot | |
| Duodenal ulcer |  Outer appearance |
| Hemorrhage - clipping |
|
| Hemorrhage - adrenalin |
|
 Visible vessel |
| Visible vessel | |
|
|
| Each figure shows a hemorrhage grade Forrest IIa. The visible vessel of the left figure is 3 mm in size (Forrest IIaG), to the right the vessel measures 1mm (Forrest IIag ). Stumpf = stump (of a visible vessel) Koagel = clot | |