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Related Experiment Videos

Screening for colorectal cancer

J S Mandel1

  • 1School of Public Health, University of Minnesota, Minneapolis 55455, USA.

Current Opinion in General Surgery
|January 1, 1994
PubMed
Summary
This summary is machine-generated.

Annual fecal occult blood testing significantly reduces colorectal cancer mortality by at least 33%. Sigmoidoscopy screening shows promise, warranting further research for definitive recommendations.

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Area of Science:

  • Gastroenterology
  • Oncology
  • Preventive Medicine

Background:

  • Colorectal cancer (CRC) remains a significant public health concern.
  • Early detection through screening is crucial for reducing CRC mortality.
  • Fecal occult blood testing (FOBT) and sigmoidoscopy are established screening methods.

Purpose of the Study:

  • To review existing studies on FOBT and sigmoidoscopy for CRC screening.
  • To evaluate the evidence for CRC mortality reduction associated with these screening methods.
  • To assess the current recommendations and future research needs for sigmoidoscopy screening.

Main Methods:

  • Review of published studies, including randomized controlled trials, nonrandomized controlled studies, and case-control studies.
  • Analysis of data on CRC mortality reduction attributed to FOBT and sigmoidoscopy.

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  • Evaluation of the strength of evidence supporting screening recommendations.

    • Main Results:

    • A randomized controlled trial demonstrated that annual FOBT reduces CRC mortality by at least 33%.
    • A nonrandomized controlled study reported a 43% CRC mortality reduction with early detection via FOBT and sigmoidoscopy.
    • A case-control study indicated a 31% CRC mortality reduction associated with FOBT.

    Conclusions:

    • Annual FOBT is supported by concrete evidence for reducing CRC mortality.
    • Sigmoidoscopy screening shows suggestive results from observational studies, but requires further research for definitive recommendations.
    • Continued research is essential to establish the full benefits of sigmoidoscopy in CRC screening programs.