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Risk factors for biliary tract cancers
Z R Khan1, A I Neugut, H Ahsan
1Department of Medicine, College of Physicians & Surgeons, Columbia University, New York, New York, USA.
The American Journal of Gastroenterology
|February 6, 1999
Summary
Gallstones are a major risk factor for biliary tract cancers. This study identified other risk factors for gallbladder and bile duct cancers, including female gender, age, smoking, and hysterectomy history in women.
Area of Science:
- Oncology
- Epidemiology
- Gastroenterology
Background:
- Biliary tract cancers, including gallbladder and extrahepatic bile duct carcinomas, have poorly understood risk factors.
- This study represents the first U.S.-based case-control investigation into these risk factors.
Purpose of the Study:
- To identify risk factors associated with biliary tract cancers.
- To delineate a high-risk population for targeted preventive strategies.
Main Methods:
- A hospital-based case-control study was conducted.
- Medical records of 69 patients with primary biliary tract cancer and 138 controls (patients with benign surgical conditions) were reviewed.
Main Results:
- Cholelithiasis (gallstones) showed a significant association with biliary tract cancers (OR, 19.5).
- Gallbladder cancer risk factors included female gender, advanced age, cigarette smoking, and postmenopausal status.
- Extrahepatic bile duct cancer risk factors included a history of cholecystectomy and hysterectomy in women.
Conclusions:
- Identified risk factors help define a high-risk population for biliary tract cancers.
- These findings may inform future preventive measures and targeted screening strategies.