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The guides and editors at About.com make every effort to get it right the first time; however, when there is an error of fact the error is corrected immediately and it is noted on this page along with a short note explaining the change.

  1. Posted 4/9/2008

    This article has been updated to reflect the following information: When a fecal occult blood test (FOBT) comes back positive, there's only about a 2% chance that the person has colorectal cancer. A prior version stated a different percentage. http://coloncancer.about.com/od/fastfacts/a/FF_CRC_Screen.htm

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