Acute Pancreatitis and Acute Fluid Collections

Inclusion Criteria: * Symptoms and signs of acute pancreatitis and if pancreatic or/and peripancreatic fluid collections were confirmed by ultrasound and computed tomography examination Exclusion Criteria: * Collections resulting from pancreatic surgery, chronic pancreatitis and encapsulated collections and collections with uncertainty about the relationship between the collections and clinical symptoms and signs of acute pancreatitis were excluded.