Severe acute pancreatitis caused by parasites in the common bile duct.

Nine cases of acute pancreatitis due to parasites in the common bile duct (Ascaris lumbricoides 4, Clonorchis sinensis 5) are reported. Eight cases were discovered at laparotomy and one at postmortem. The indications for operation were worsening pancreatitis, sepsis or cholangitis. Decompression of the biliary system and removal of parasites resulted in the recovery of the eight cases operated upon. In endemic areas, all patients with acute pancreatitis should be screened for parasites. Antibiotics and/or antihelminthics should be given if they are found. Surgery is necessary for those with worms causing biliary or pancreatic obstruction who do not respond.