Isolated Mediastinal Pseudocyst of the Pancreas.

Background: Mediastinal pancreatic pseudocyst is a rare complication of pancreatitis.
Case Characteristics: An 8-year-old boy with chest pain and shortness of breath. Computed tomography of chest showed a cystic mass in the mediastinum. The cyst aspirate revealed high amylase and lipase levels, suggestive of pancreatic pseudocyst.
Outcome: The patient gradually recovered after Roux-en-Y cystojejunostomy.
Message: Cysto-jejunostomy is a viable treatment option for mediastinal pancreatic pseudocyst, especially with failure of medical therapy.