The Impact of Cholecystectomy on Colorectal Cancer Risk: A Comprehensive Review on Risk Factors and the Association

Area of Science:

• Gastroenterology
• Oncology
• Microbiology

Background:

• Gallbladder removal (cholecystectomy) is a common procedure.
• A potential link between cholecystectomy and colorectal cancer (CRC) risk is debated.
• Understanding this association requires evaluating biological and epidemiological factors.

Purpose of the Study:

• To review the debated association between cholecystectomy and colorectal cancer risk.
• To evaluate biological mechanisms and epidemiological evidence.
• To identify related risk factors for this potential association.

Main Methods:

• Literature review of biological mechanisms.
• Analysis of epidemiological studies on cholecystectomy and CRC.
• Synthesis of evidence regarding risk factors.

Main Results:

• Altered bile acid metabolism and gut microbiota post-cholecystectomy may increase CRC risk, particularly in the right colon.
• Epidemiological studies show inconsistent results: some indicate heightened CRC risk (especially in women and proximal colon cancers), while others show no link or even a reduced risk.
• No clear consensus exists on the cholecystectomy-CRC link, with biological evidence suggesting a possible connection but epidemiological findings being inconclusive.

Conclusions:

• Further prospective research is crucial to resolve the uncertainty surrounding the cholecystectomy-CRC association.
• Enhanced CRC screening and lifestyle adjustments may benefit high-risk patients post-cholecystectomy.
• Findings may influence future clinical practice and research directions in gastroenterology and oncology.