Bile ducts


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bile

 [bīl]
a clear yellow or orange fluid produced by the liver. It is concentrated and stored in the gallbladder, and is poured into the small intestine via the bile ducts when needed for digestion. Bile helps in alkalinizing the intestinal contents and plays a role in the emulsification, absorption, and digestion of fat; its chief constituents are conjugated bile salts, cholesterol, phospholipid, bilirubin, and electrolytes. The bile salts emulsify fats by breaking up large fat globules into smaller ones so that they can be acted on by the fat-splitting enzymes of the intestine and pancreas. A healthy liver produces bile according to the body's needs and does not require stimulation by drugs. Infection or disease of the liver, inflammation of the gallbladder, or the presence of gallstones can interfere with the flow of bile.
bile acids steroid acids derived from cholesterol; classified as primary, those synthesized in the liver, e.g., cholic and chenodeoxycholic acids, or secondary, those produced from primary bile acids by intestinal bacteria and returned to the liver by enterohepatic circulation, e.g., deoxycholic and lithocholic acids.
bile ducts the canals or passageways that conduct bile. There are three bile ducts: the hepatic duct drains bile from the liver; the cystic duct is an extension of the gallbladder and conveys bile from the gallbladder. These two ducts may be thought of as branches that drain into the “trunk,” or common bile duct. The common bile duct passes through the wall of the small intestine at the duodenum and joins with the pancreatic duct to form the hepatopancreatic ampulla, or ampulla of Vater. At the opening into the small intestine there is a sphincter that automatically controls the flow of bile into the intestine.

The bile ducts may become obstructed by gallstones, benign or malignant tumors, or a severe local infection. Various disorders of the gallbladder or bile ducts are often diagnosed by ultrasonography, radionuclide imaging, and x-ray examination of the gallbladder and bile ducts using a special contrast medium so that these hollow structures can be clearly outlined on the x-ray film.

Bile ducts

Tubes that carry bile, a thick yellowish-green fluid that is made by the liver, stored in the gallbladder, and helps the body digest fats.
References in periodicals archive ?
This result can be logically explained by the proven risk factors themselves, including the number of bile ducts [sup][5] and bile duct diameter.
Between March 2002 and October 2013, 52 patients were referred to the University of Cape Town Private Academic Hospital (UCTPAH), South Africa (SA), for assessment of a suspected or confirmed major injury to the extrahepatic bile duct sustained during a laparoscopic cholecystectomy.
With the suspicion of a bile duct anomaly, even though there was a T-tube in place, an endoscopic retrograde cholangiopancreatography (ERCP) was performed that was interpreted at the local hospital as normal without any radiologic evidence of extravasation (Figure1-B).
A seven-year-old girl who was suffering from sickle cell anemia had a serious medical complication where an accumulation of stones in her gall bladder blocked the bile duct causing the bile to rise to dangerous levels.
87%) patients sustained bile duct injury during laparoscopic cholecystectomy, while 25 (78.
Findings of investigations, including those in Uzbekistan, show that only in 30% of observations iatrogenic injuries of bile ducts are diagnosed during the operation, about 50% of injuries are diagnosed in the postoperative period on the background of peritonitis development, rapidly developing mechanic jaundice or bile excreting along the drainage.
biliary cysts are classified into the following types: Ia--dilatation of the extrahepatic bile duct (entire); Ib--dilatation of the extrahepatic bile duct (focal segment); Ic--dilatation of the common bile duct portion of extrahepatic bile duct; II--bile duct diverticulum (rarest, with a prevalence of 0.
Diameter and wall thickness of both normal and infected bile ducts was measured from three different sides.
Moreover, the segment III and IV bile ducts form the common trunk and it constitutes the left hepatic bile duct by joining the segment II bile duct, which is defined as type 2 according to the classification of Cho et al.
However complete cyst excision does not confer immunity against the emergence of carcinoma in the remaining bile ducts.
In the West, the major risk factors for neoplasia involving bile ducts are primary sclerosing cholangitis, Thorotrast deposition, abnormal choledochopancreatic junction, and choledochal cyst.