OBJECTIVE: To deter-mine the safety and efficacy of longitudinal pancreatojejunostomy in patients with chronic pancreatitis and intractable pain who do not have a markedly dilated pancreatic duct. BACKGROUND: Ductal decompression by side-to-side, longitudinal pancreatojejunostomy has become the operation of choice for patients with chronic pancreatitis and intractable pain when the pancreatic duct is markedly dilated. However, markedly dilated pancreatic ducts are found in less than 40% of patients with disabling pain. PATIENTS AND METHODS: Twenty-eight consecutive patients with intractable pain from chronic pancreatitis, most of whom had minimal or no dilation of the pancreatic duct, were treated with side-to-side, longitudinal pancreatojejunostomy between 1970 and 1993. RESULTS: There were 18 (64%) males and 10 (36%) females. The mean age was 41 years (range 11 to 12). The etiologies for chronic pancreatitis were alcohol (82%), gallstones (7%), trauma (7%), and familial trait (4%). Intractable pain was present for a mean of 4 years (range 0.5 to 12). Thirteen patients (46%) were dependent on narcotics prior to surgery. Twenty-five patients;(89%) had minimal (< 8 mm) or no dilation of the pancreatic duct and 3 (11%) had markedly dilated pancreatic ducts (> 10 mm). Ah experienced complete pain relief in the immediate postoperative period. Twenty-four patients (86%) have remained free of pain after a mean follow-up of 3.5 years (range 1 to 8). CONCLUSIONS: In patients with chronic pancreatitis and intractable pain, small pancreatic duct size should not be considered a contraindication to side-to-side, longitudinal pancreatojejunostomy.