Grading of Acute Cellular Rejection After Liver Transplantation	
		
Global Assessment	Criteria	
Mild $	Rejection infiltrate in a minority of the triads, that is generally mild and confined within the portal spaces	
Indeterminate	Portal inflammation infiltrate that fails to meet the criteria for the diagnosis of acute rejection	
Moderate $	Rejection infiltrate expanding most or all of the triads	
Severe $	As moderate, with spillover into periportal areas and moderate to severe perivenular inflammation that extends into the hepatic parenchyma and is associated with perivenular hepatocyte necrosis