Classification

Working Group Classification—2007 [6]

Interstitial Edematous Pancreatitis

Necrotizing Pancreatitis

Pancreatic necrosis with peripancreatic necrosis—sterile necrosis, infected necrosis

Pancreatic necrosis alone—sterile necrosis, infected necrosis

Peripancreatic necrosis alone—sterile necrosis, infected necrosis

(<4 weeks after onset of pancreatitis)

Acute peripancreatic fluid collection—sterile, infected

Acute postnecrotic collection

Pancreatic necrosis with peripancreatic necrosis—sterile, infected

Pancreatic necrosis alone—sterile, infected

Peripancreatic necrosis alone—sterile, infected

(>4 weeks after onset of pancreatitis)

Pancreatic pseudocyst—sterile, infected

Walled-off necrosis

Pancreatic necrosis with peripancreatic necrosis—sterile, infected

Pancreatic necrosis alone—sterile, infected

Peripancreatic necrosis alone—sterile, infected