Percutaneous drainage of pancreatic pseudocysts: A prospective study

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Abstract
We classify pancreatic pseudocysts in 3 types: post‐necrotic type I, related to acute pancreatitis; post‐necrotic type II, related to an acute attack superimposed on chronic pancreatitis; and retention type III, due to chronic pancreatitis with ductal stricture. A prospective study on percutaneous catheter drainage of post‐necrotic pseudocysts (type I and II) was undertaken from 1987 to 1990. Twenty‐three pseudocysts in 21 patients were drained. Overall recurrence rate was 4%; 2 patients had fistulization of the catheter into bowel; no deaths occurred. The procedure was successful in all type I cysts; in type II cysts it was associated with prolonged drainage and increased risk of complications when cyst‐duct communication was present. Percutaneous drainage has no role to play in type III retention cysts. Guidelines regarding indications for treatment and the techniques employed are described.

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