The most common cause of common biliary duct dilatation is obstruction due to gallstones, states the Radiology Assistant. Another cause of obstruction besides gallstones is stricture, or narrowing, of the common bile duct.Know More
Strictures of the bile duct may be due to tumors, such as cholangiocarcinoma, gallbladder adenocarcinoma or pancreatic adenocarcinoma, or metastatic disease. Strictures may also result from inflammation from pancreatitis, radiation or chemotherapy, biliary parasites, AIDS cholangiopathy or primary sclerosing cholangitis, according to the Radiology Assistant.
If there are no gallstones and no strictures causing obstruction, the cause of the bile duct dilatation may be non-obstructive biliary disease, notes the Radiology Assistant. Examples of non-obstructive biliary diseases are Caroli disease, choledochal cyst, recurrent pyogenic cholangitis and primary sclerosing cholangitis.
Caroli disease is a genetically inherited disease that results in dilatation of the ducts within the liver, according to the Radiology Assistant. It is associated with polycystic kidney disease. Choledochal cyst is a dilatation of the bile ducts outside the liver that is present at birth. Recurrent pyogenic cholangitis is common in Asian countries and is associated with biliary parasites. Primary sclerosing cholangitis results in strictures in the bile ducts and is associated with ulcerative colitis and Crohn's disease.Learn more about Gastrointestinal Issues
The function of the common bile duct is to carry bile from the liver and the gallbladder into the duodenum, the top of the small intestine directly after the stomach. The bile it carries interacts with ingested fats and fat-soluble vitamins to enable them to be absorbed by the intestine.Full Answer >
As of 2015, surgery to remove the gallbladder is the most common method of treating gallstones, according to Mayo Clinic. Medication is available to dissolve the stones, but may take several years to work. The stones start forming again upon discontinuing medication. Stones that cause no symptoms require no treatment.Full Answer >
Gallstones tend to form when the gallbladder does not close correctly, or the bile contains high levels of cholesterol or bilirubin, according to Mayo Clinic. Cholesterol gallstones take on a yellow color, while bilirubin gallstones are brown or black in color. They cause pain that lasts up to an hour.Full Answer >
The treatments for gallstones include nonsurgical therapy and laparoscopic cholecystectomy, which is the surgical removal of the gallbladder, according to WebMD. The treatment for gallstones may only be necessary when the stones result in symptoms, including pain, says Mayo Clinic.Full Answer >