What is a Bile Duct?

Bile ducts, pipes that carry bile. When food is digested, bile stored in the gallbladder flows through it into the duodenum. ^[1]

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Bile ducts, pipes that carry bile. When digesting food, store in

Common bile duct stones

Common bile duct stones are stones that are present in the common bile duct. In the first half of the 20th century, people learned that common bile duct stones formed due to the decline of gallbladder stones through the bile duct, which is similar to the situation in Europe and the United States. Since the 1950s, it has gradually been discovered that in large areas of China and East Asia, there are stones that occur in the liver and bile ducts. Therefore, "common bile duct stones" are divided into two categories in terms of source and nature, namely: secondary bile (common) duct stones: refers to stones that originate in the gallbladder and are small in the process of the occurrence and development of gallstone disease Stones are lowered into the common bile duct through the gallbladder duct or the diameter of the gallbladder duct is relatively large, and larger stones can also enter the common bile duct successively. A small number of stones that enter the common bile duct can be drained into the duodenum through the lower end of the common bile duct without remaining in the common bile duct. This is a "natural stone removal" process, which is often only found when carefully filtering the patient's stool Analysis of identified gallstones was confirmed. Most of the stones remaining in the common bile duct cause various and sometimes dangerous pathological damage, which is actually a more serious complication of gallstone disease. Primary bile duct (common) calculi: It is a component of primary bile duct calculi, which can be primary in the common bile duct, can occur at the same time as intrahepatic bile duct stones, and sometimes may be caused by intrahepatic bile ducts. Simple primary common bile duct stones can cause severe biliary complications. If combined with hepatolithiasis, the pathological damage is more serious.

Common bile duct carcinoma

Cancer of biliary duct refers to malignant extrahepatic bile duct tumors that originate from the junction of the left and right hepatic ducts to the lower part of the common bile duct. % 0.3% to 1.8% of biliary tract surgery. In Europe and the United States, gallbladder cancer is 1.5 to 5 times that of bile duct cancer. According to Japanese data, the ratio of bile duct cancer to gallbladder cancer is about 1.5 to 3.0. The age of onset is mostly 50 to 70 years, but it can also be seen in young people.

Common bile duct dilatation

Bile duct dilatation is a more common congenital bile duct malformation. It was previously considered to be a disease confined to the common bile duct, so it is called congenital common bile duct cyst. In 1723, Vater reported the first case of Douglas in 1852 for a detailed introduction to his symptomology and pathology. For more than a century, with the deepening of the understanding of the disease, it has been discovered through biliary angiography that dilated lesions can occur in any part of the liver and extrahepatic biliary tract. There are many types according to the shape and number of the parts, and clinical manifestations have also changed different. ^[3]