What are the similarities and differences between an ANC and WON?
- Both collections can be intrapancreatic or extrapancreatic, associated with necrotizing pancreatitis, and contain variable amounts of fluid and solid necrotic tissue.
- An ANC occurs within the first 4 weeks and does not have a definable wall encapsulating the collection.
- WON occurs 4 weeks or more after the onset of necrotizing pancreatitis and is a mature, encapsulated collection with a well-defined inflammatory wall.
