A mature, encapsulated collection of pancreatic and/or peripancreatic necrosis that has developed a well defined inflammatory wall is best known as:: (A) WOPN (walled-off Pancreatic necrosis), (B) Pseudocyst, (C) Pancreatic abscess, (D) Cystic neoplasm of pancreas
Answer is A. WOPN (walled-off pancreatic necrosis) A mature, encapsulated collection of pancreatic and/or peripancreatic necrosis with a well defined inflammatory wall. WOPN usually occurs >4 weeks after onset of necrotising pancreatitis. CECT criteria Heterogeneous with liquid and non-liquid density with varying degrees of loculations Well defined wall, that is, completely encapsulated Ref:Gut 2013;62:102-111. doi:10.1136/gutjnl-2012-302779.