About Polyps

  • Most colorectal cancers start as tiny growths on the lining of the colon.
  • These growths are called polyps. Most are very small, often smaller than a pencil eraser.
  • Most polyps are pre-cancerous, meaning they could turn into cancer if not found early enough. 
  • Pre-cancerous polyps are called adenomas
  • By age 50, about 25% (or 1 of 4) people has pre-cancerous polyps.
  • By age 75, about 50% (or 1 of 2) people has pre-cancerous polyps. 
  • Most polyps do not cause symptoms
  • With screening, polyps can be found and removed BEFORE they become cancer. 

  • Screening can PREVENT colorectal cancer.


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