Table 1

International, consensus-based definitions of severity of acute pancreatitis

MildNo organ failure, local or systemic complications and usually resolves in first week
ModerateTransient organ failure, local complications or exacerbation of comorbid disease
SeverePersistent organ failure (>48 hours)
  • Local complications include peripancreatic fluid collections, pancreatic and peripancreatic necrosis (sterile or infected), pseudocyst, and walled-off necrosis.19