Define biliary atresia.

Define biliary atresia.

• A. Atrophy of the bile duct
• B. Blockage of the pancreatic duct
• C. Overproduction of bile
• D. Damage to the gall bladder

Answer: (A)

Biliary atresia is a congenital condition in which the bile ducts that drain bile from the liver to the intestine are blocked or absent. The term atresia means closed or absent, not atrophied, so describing it as an atrophy of the bile duct isn’t accurate. Because bile can’t flow, bile acids and conjugated bilirubin build up in the liver, leading to persistent jaundice, pale stools, dark urine, and progressive liver damage if not treated. In practice, this condition often requires surgical restoration of bile flow, such as a Kasai portoenterostomy, and may eventually necessitate liver transplantation. It’s important to distinguish this from problems like pancreatic duct blockage, overproduction of bile, or gallbladder damage, which are not what biliary atresia describes.

Biliary atresia is a congenital condition in which the bile ducts that drain bile from the liver to the intestine are blocked or absent. The term atresia means closed or absent, not atrophied, so describing it as an atrophy of the bile duct isn’t accurate. Because bile can’t flow, bile acids and conjugated bilirubin build up in the liver, leading to persistent jaundice, pale stools, dark urine, and progressive liver damage if not treated. In practice, this condition often requires surgical restoration of bile flow, such as a Kasai portoenterostomy, and may eventually necessitate liver transplantation. It’s important to distinguish this from problems like pancreatic duct blockage, overproduction of bile, or gallbladder damage, which are not what biliary atresia describes.