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Cancer after cholecystectomy: record-linkage cohort study
M J Goldacre1, J D Abisgold, V Seagroatt
1Unit of Health-Care Epidemiology, Department of Public Health, University of Oxford Old Road Campus, Old Road, Oxford OX3 7LF, UK. michael.goldacre@dphpc.ox.ac.uk
British Journal of Cancer
|March 17, 2005
Summary
Cholecystectomy (gallbladder removal) shows a short-term cancer risk increase but does not cause cancer. Long-term studies confirm no causal link between gallbladder removal and gastrointestinal cancers.
Area of Science:
- Gastroenterology and Oncology
- Epidemiological Research
Background:
- Cholecystectomy is a common surgical procedure.
- Concerns exist regarding potential links between cholecystectomy and subsequent cancer development.
Purpose of the Study:
- To investigate the association between cholecystectomy and subsequent cancer risk.
- To determine if any observed associations are likely to be causal.
Main Methods:
- Retrospective cohort study design.
- Utilized linked medical statistics for a cholecystectomy group (n=39,254) and a reference cohort (n=334,813).
- Analyzed cancer incidence rates over varying follow-up periods.
Main Results:
- A short-term elevation in rates of colon, pancreas, liver, and stomach cancers was observed post-cholecystectomy.
- No long-term elevation in cancer rates was found.
- After excluding early colon cancers, the rate ratio for colon cancer was 1.01 (95% CI 0.90-1.12) and 0.94 (95% CI 0.79-1.10) at 10+ years.
Conclusions:
- The short-term associations between cholecystectomy and gastrointestinal cancers are highly improbable to be causal.
- Cholecystectomy does not appear to cause cancer.
