What are the American College of Gastroenterology (ACG) guidelines for patients with first-degree relative diagnosed with colon cancer?

Updated: Apr 15, 2020
  • Author: Tomislav Dragovich, MD, PhD; Chief Editor: N Joseph Espat, MD, MS, FACS  more...
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Answer

For screening purposes, patients with one first-degree relative diagnosed with colorectal cancer or advanced adenoma at age 60 years or older are considered at average risk. For patients with a single first-degree relative diagnosed with colorectal cancer or advanced adenoma before age 60 years, or those with two first-degree relatives with colorectal cancer or advanced adenomas, the guideline recommends colonoscopy every 5 years, beginning at age 40 years or at 10 years younger than the age at diagnosis of the youngest affected relative.


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