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The 2012 Atlanta classification system of pancreatic fluid collections (PFCs) [6].
| Type of Collection | Age of Collection | Presence of Necrosis |
|---|---|---|
| Acute peripancreatic fluid collection | ≤4 weeks | No |
| Pseudocyst | >4 weeks | No |
| Acute Necrotic Collection | ≤4 weeks | Yes |
| Walled-off Necrosis | >4 weeks | Yes |
