Abstract
A 60-year-old man was admitted to our hospital for upper abdominal pain, 8 years after an operation for severe acute pancreatitis (SAP). Continuous intra-arterial infusion therapy was performed for the SAP with necrosis. Although the inflammation of the pancreas was improved, a pancreatic body pseudocyst developed and outgrew. The cyst infiltrated the jejunal mesentery and contained necrotic tissue. Necrosectomy and cystojejunostomy were performed with a drainage tube placed into the cyst through the mesentery for lavaging (internal and external drainage). The postoperative course was uneventful. Pseudocysts developing after the necrotic pancreatitis are known as Organized Pancreatic Necrosis (OPN), and frequently require surgical intervention for preventing infection. Internal and external drainage is considered to be an effective strategy for OPN.
