The cause of biliary system cancer is unknown, although a possibility is gallstones. When gallstones are present, bile is released more slowly. If the bile contains carcinogens, the gallbladder tissue is exposed to these carcinogens for a longer period of time. Approximately 1% of all cholecystectomy specimens are found to be cancerous. Because of the risk of cancer, even for asymptomatic cholelithiasis, a cholecystectomy is recommended. Primary carcinoma of the gallbladder is rare and is usually associated with cholecystitis. Most biliary cancer is from metastasis, commonly from the head of the pancreas.
Gallbladder and Biliary Duct (Biliary System) Cancer has been found in Diseases and Disorders
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