Acute pancreatitis complicating the insertion of a self-expandable biliary metal stent.

A patient is reported who developed acute pancreatitis complicated by pseudocyst formation immediately after the insertion of a self-expanding metallic biliary stent via the percutaneous route. The distal end of the stent was positioned into the duodenum. Endoscopists should be aware of this potential complication of metallic biliary stents.