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The bile duct is some 6–8 cm long, and normally up to 8 mm in diameter. [4]Its proximal supraduodenal part is situated within the free edge of the lesser omentum.Its middle retroduodenal part is oriented inferiorly and right-ward, and is situated posterior to the first part of the duodenum, and anterior to the inferior vena cava.
It is formed by the union of the right hepatic duct (which drains bile from the right functional lobe of the liver) and the left hepatic duct (which drains bile from the left functional lobe of the liver). [3] The duct is about 3 cm long. [4] The common hepatic duct is about 6 mm in diameter in adults, with some variation. [5]
The double duct sign is a radiological finding characterized by the simultaneous dilation of the common bile duct and the main pancreatic duct.This sign is significant because it often indicates an obstruction in the distal bile duct and pancreatic duct, frequently caused by serious underlying pathologies such as pancreatic carcinoma or periampullary tumors. [1]
Intrahepatic bile ducts 3. Left and right hepatic ducts 4. Common hepatic duct 5. Cystic duct 6. Common bile duct 7. Ampulla of Vater 8. Major duodenal papilla 9. Gallbladder 10–11. Right and left lobes of liver 12. Spleen 13. Esophagus 14. Stomach 15. Pancreas: 16. Accessory pancreatic duct
Common bile duct stone, also known as choledocholithiasis, is the presence of gallstones in the common bile duct (CBD) (thus choledocho-+ lithiasis). This condition can cause jaundice and liver cell damage. Treatments include choledocholithotomy and endoscopic retrograde cholangiopancreatography (ERCP).
Extraction of choledocholithiasis and/or intrahepatic stones: choledocholithiasis is the presence of gallstones within the common bile duct. They can be either primary (formed within the duct) or secondary (entering the duct from the gallbladder). Biliary endoscopic sphincterotomy allows for opening of the sphincter of Oddi, allowing stones to ...
[2] [3] However, when a gallstone obstructs the bile duct and causes acute cholestasis, a reflexive smooth muscle spasm often occurs, resulting in an intense cramp-like visceral pain in the right upper part of the abdomen known as a biliary colic (or "gallbladder attack"). [4] This happens in 1–4% of those with gallstones each year. [4]
A surgically created passage between the common bile duct and the jejunum in a procedure called a choledochojejunostomy, can be carried out to relieve the symptoms of biliary obstruction as well as allows the bile duct to drain. [5] In infants with biliary atresia, hepatoportoenterostomy is an alternative method of providing bile drainage.