Figure 1. Categories of ductal abnormalities seen in patients with pseudocysts. Type I: normal duct with no communication with cyst. Type II: normal duct with duct–cyst communication. Type III: otherwise normal duct with stricture and no duct–cyst communication. Type IV: otherwise normal duct with stricture and duct–cyst communication. Type V: otherwise normal duct with complete cut-off. Type VI: chronic pancreatitis, no duct–cyst communication. Type VII: chronic pancreatitis with duct–cyst communication.