AAST Pancreatic injury scale 




Grade I                                 


— Hematoma with minor contusion/ superficial laceration but without duct injury


Grade  II                

— Major contusion/laceration but without duct injury


Grade III

— Distal laceration or parenchymal injury with duct injury


Grade IV

— Proximal (i.e. to the right of the superior mesenteric vein) laceration or parenchymal injury with an injury to bile duct/ampulla


Grade V

— Massive disruption of the pancreatic head


Note: Advance one grade for multiple pancreatic injuries up to grade III.

Link to original article:  J Trauma; 1990 Nov;30(11):1427-9.