Acute pancreatitis with peripancreatic fluid collection
1 day history of severe abdominal pain. Tender all over abdomen. History of recent excess alcohol consumption.
CT abdomen and pelvis
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The pancreas is oedematous and surrounded by a large volume of free fluid, in keeping with acute pancreatitis. There is no definite hypoenhancing region in the pancreas to indicate necrosis. The portal and splenic veins are patent. The liver has a diffusely reduced density in keeping with fat infiltration. No gallstones identified. The free fluid tracks in the retroperitoneum towards the pelvis. Appearances elsewhere unremarkable.
Acute peripancreatic fluid collections are seen in the first 4 weeks after onset of acute interstitial pancreatitis and are non-encapsulated. Following this period, encapsulated peripancreatic collections are identified and are classified as pseudocysts. Most acute peripancreatic fluid collections resolve spontaneously.