Patients with pancreatitis can develop inflammatory fluid collection around the pancreas called pseudocysts. Pseudocysts may cause abdominal pain when they are more than 6cm in size. These pseudocysts can be treated (drained) by surgery or by endoscopy. Both treatment options are the current standard-of-care at all institutions around the World. The aim of this study is to identify the better of the two techniques, surgery versus endoscopy, for treatment of patients with pancreatic pseudocysts. This will be done by comparing a) the rates of pseudocyst recurrence b) quality of life of patients following treatment and c) cost associated with treatment, between both treatment modalities.