When is drainage indicated for treatment of pancreatic pseudocysts

When is drainage indicated for treatment of pancreatic pseudocysts? 

Pancreatic pseudocysts usually occur 4 weeks after the onset of interstitial edematous pancreatitis, have a well-defined wall, and no nonliquid component. Drainage is indicated when pseudocysts are infected, rapidly enlarging, painful, obstructing, or large (≥ 5 cm). Drainage can be achieved via percutaneous image guidance, endoscopic US guidance, or surgically; the optimal technique depends on the clinical situation and the decision should be made after multidisciplinary consultation with interventional radiologists, gastroenterologists, and surgeons.

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