Criteria for the diagnosis and severity stratification of acute pancreatitis

Table 2 Contrast-enhanced computed tomography criteria for grading the severity of acute pancreatitis

Contrast-enhanced computed tomography criteria	Scores
Extension of extrapancreatic inflammatory changes
Anterior pararenal extraperitoneal space	0 point
Root of the mesocolon	1 point
Beyond inferior renal pole	2 points
Unenhanced area in the pancreatic parenchyma (Divide the pancreas into 3 areas for expediency, head, body and tail)
Limited to one area or peripancreatic area	0 point
Extend over 2 areas	1 point
More than 2 areas	2 points

Severe acute pancreatitis: total computed tomography severity scores ≥ 2 points.