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[Does bariatric surgery decrease the risk of obesity-related tumor: a meta-analysis].

Songxin Xu1, Bin Deng, Yaosheng Chen

  • 1Department of Gastroenterology, Yangzhou First People's Hospital, Jiangsu Yangzhou 225000, China. chinadybvip@yeah.net.

Zhonghua Wei Chang Wai Ke Za Zhi = Chinese Journal of Gastrointestinal Surgery
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This summary is machine-generated.

Bariatric surgery significantly reduces obesity-related cancer risk, particularly in women. However, this protective effect diminishes with longer follow-up periods, suggesting a time-dependent impact.

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Area of Science:

  • Oncology
  • Metabolic Surgery
  • Epidemiology

Background:

  • Obesity is a major risk factor for various cancers.
  • Bariatric surgery is an effective weight-loss intervention for severe obesity.

Purpose of the Study:

  • To evaluate the impact of bariatric surgery on the incidence of obesity-related tumors.
  • To compare cancer risk between patients who underwent bariatric surgery and those who did not.

Main Methods:

  • A meta-analysis of five studies involving 108,954 patients was conducted.
  • Data were extracted from multiple databases, and meta-analysis was performed using Review Manager 5.2.
  • Publication bias was assessed using an inverted funnel chart.

Main Results:

  • Bariatric surgery was associated with a significant reduction in overall obesity-related tumors (RR=0.60).
  • Female patients showed a significantly lower incidence of tumors post-surgery (RR=0.68).
  • Cancer risk reduction was observed up to 10 years post-surgery, but not beyond.

Conclusions:

  • Bariatric surgery effectively lowers the overall risk of obesity-related cancers.
  • The benefit is more pronounced in female patients.
  • The long-term protective effect of bariatric surgery against cancer diminishes over time.