The Frey procedure is a type of pancreaticojejunostomy designed to treat chronic pancreatitis.
The fundamental technique is similar to the Puestow procedure, with a lateral incision of the pancreatic duct from an anterior approach, and then a side-to-side anastomosis between the pancreas and a mobilized loop of jejunum.
The difference between the two procedures is that in the Frey procedure, diseased portions of the pancreatic head are removed, better exposing the main pancreatic duct in the pancreatic head, and allowing improved drainage.
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