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Congenital biliary tract disease
F M Karrer1, R J Hall, B A Stewart
1Department of Surgery, Children's Hospital, Denver, Colorado.
Insights
Prompt evaluation of pediatric jaundice is crucial, especially for biliary atresia. Early Kasai
Area of Science:
- Pediatric Surgery
- Gastroenterology
- Hepatology
Background:
- Jaundice in infants necessitates urgent evaluation, particularly in cases of biliary atresia where timely intervention is critical.
- Biliary atresia can lead to complete obliteration of bile ducts by 4 months, impacting bile drainage and long-term outcomes.
- Choledochal cysts represent complex pancreaticobiliary anomalies requiring specific surgical management.
Purpose of the Study:
- To outline the diagnostic and therapeutic approaches for pediatric jaundice, focusing on biliary atresia and choledochal cysts.
- To emphasize the importance of early surgical intervention for biliary atresia to improve jaundice-free survival.
- To detail the preferred surgical treatment for choledochal cysts and management of other congenital biliary anomalies.
Main Methods:
- Review of diagnostic criteria and surgical outcomes for biliary atresia, including Kasai's operation.
- Description of surgical techniques for choledochal cyst excision and reconstruction (Roux-en-Y choledochojejunostomy).
- Discussion of management strategies for congenital common bile duct perforation and inspissated bile syndrome.
Main Results:
- Kasai's operation re-establishes bile drainage in 90% of infants with biliary atresia if performed before 4 months.
- One-third of biliary atresia patients achieve long-term jaundice-free survival, though complications like cholangitis and portal hypertension are common.
- Total excision of choledochal cysts with Roux-en-Y reconstruction is the preferred treatment, with "internal" excision minimizing operative risks.
Conclusions:
- Early surgical intervention for biliary atresia significantly improves outcomes, with liver transplantation as an option for treatment failure.
- Complete surgical excision and reconstruction are effective for choledochal cysts, addressing associated pancreaticobiliary anomalies.
- Congenital biliary tract issues, including perforation and inspissated bile syndrome, have established management protocols involving drainage and cholangiography.
Abstract:
Jaundice in the pediatric patient requires prompt and directed evaluation. This dictum is highlighted in infants with biliary atresia, in whom the progressive sclerosing process results in complete obliteration of patent but microscopic hilar biliary structures by 4 months of age. Kasai's operation, if done before that time, will re-establish bile drainage in 90% of infants. One fourth to one third of patients achieve long-term jaundice-free survival. Complications of cholangitis, portal hypertension, and fat malabsorption are experienced by many patients. In children with early or late operative failure, liver replacement now offers legitimate hope for extended survival. Choledochal cyst is a conglomerate of pancreaticobiliary anomalies consisting of a choledochal cyst, a common-channel-type pancreaticobiliary junction, intrahepatic cystic disease, and partial obstruction of the distal common bile duct. Many patients have one or more of these malformations. It is now widely accepted that the preferred treatment of choledochal cyst is total excision of the diseased biliary duct with reconstruction by Roux-en-Y choledochojejunostomy. "Internal" excision avoids injury to other structures in the hepatoduodenal ligament, particularly if pericystic inflammation is present. Congenital perforation of the common bile duct responds in most cases to simple peritoneal drainage of the perforation. Retention of the tube cholecystostomy is useful for subsequent cholangiographic follow-up. Tube cholecystostomy may also be useful for irrigation of the biliary tract in infants with inspissated bile syndrome.