Colon and Rectal Polyps | Michigan Medicine

A polyp is a belittled growth of excess tissue that often grows on the line of the large intestine, besides known as the colon. Colon and rectal polyps occur in about 25 percentage of men and women ages 50 and older. not all polyps will turn into cancer, and it may take many years for a polyp to become cancerous .
Anyone can develop colon and rectal polyps, but people with the stick to risk factors are more probable to do thus :

  • Age 50 years and older
  • A family history of polyps or colon cancer
  • A rare inherited gene that makes people more likely to develop polyps
  • An inflammatory bowel disease, such as ulcerative colitis or Crohn’s disease
  • High-fat, low-fiber diet
  • Tobacco and alcohol use
  • Little or no exercise
  • Obesity

Two Types of Polyp Shapes

Polyps develop in two different shapes : flat ( sessile ) and with a haunt ( pedunculated ). sessile polyps are more common than previously thought and harder to detect in colon cancer screening. They lie flat against the open of the colon ’ sulfur trace, besides known as the mucous membrane. Pendunculated polyps are mushroom-like weave growths that attach to surface of the colon ’ s mucous membrane by a long, reduce stalk .

Five Types of Polyps

The big majority of polyps will not become cancers. Certain types of polyps are more probably to turn into cancer. Removal of polyps during a colonoscopy reduces the risk of developing colon cancer in the future.

The most park types of colon and rectal polyps are :

Adenomatous (tubular adenoma)

About 70 percentage of all polyps are adenomatous, making it the most common type of colon polyp. When this type of polyp is found, it is tested for cancer. only a minor percentage actually become cancerous, but closely all malignant polyps began as adenomatous. fortunately, the process for these polyps to turn into colon cancer typically takes many years. With even screen, they can be found and removed before that happens .


A type of serrate polyp, hyperplastic polyps are park, small and considered extremely low risk for turning cancerous. typically any hyperplastic polyps found in the colon are removed and tested to ensure they are not cancerous.

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Depending on their size and placement in the colon, serrated polyps may become cancerous. Small, serrated polyps in the lower colon, besides known as hyperplastic polyps, are rarely malignant. Larger serrated polyps, which are typically bland ( sessile ), difficult to detect and located in the upper colon, are precancerous .


inflammatory polyps most often occur in people who have incendiary intestine disease ( IBD ). These types of polyps are besides known as pseudopolyps because they are not dependable polyps, but rather develop as a reaction to chronic ignition in the colon. inflammatory polyps are benign and by and large do not carry the risk of developing into colon cancer .

Villous Adenoma (Tubulovillous Adenoma)

approximately 15 percentage of polyps detected in colon cancer screening are villous or tubulovillous adenoma. This type of polyp carries a high risk of turning cancerous. They are normally sessile, which makes them more difficult to remove. Smaller villous adenoma polyps may be removed during a colonoscopy, while larger polyps of this type may require operating room for arrant removal.

Polyps can be detected and safely removed during a colonoscopy, preventing them from turning into cancer. bombastic polyps may require more than one treatment, and in some patients surgery could be required for complete removal. If you have an increased gamble for colon polyps, talk with your repair about the types and frequency of tests that will be best for you .

What are Complex Polyps?

complex polyps ( sometimes referred to as “ defiant polyps ” in the aesculapian literature ) are those polyps that possess one of the following features : size greater than 2 centimeters, in a location unfavorable or besides sessile for removal by more straightforward techniques, or merely polyps that the doctor performing your colonoscopy does not feel they can safely remove .

Make an Appointment

To schedule an appointment to discuss discussion options for colon and rectal polyps, call us at 888-229-7408 .

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