FIGURE 1. System to categorize ductal disruptions or ductal abnormalities seen in patients with pancreatic pseudocysts. The main pancreatic duct is represented in all types. Type 1 is a normal pancreatic duct with a noncommunicating pseudocyst represented by the dotted elliptical mass. Type 2 represents a normal duct with communication with the cyst. Type 5 represents the so-called isolated pancreatic segment. Types 6 and 7 represent chronic pancreatitis.