The Forrest Classification of Peptic Ulcers (Stigmata of recent haemorrhage)

Forrest 1a   Forrest 1b
Spurting bleeding   Non-spurting active bleeding
 
     
Forrest 2a   Forrest 2b
Non-bleeding visible vessel   Non-bleeding ulcer with an adherent clot
 
     
Forrest 2c   Forrest 3
Ulcer with haematin-covered base   Ulcer with clean base