"Polyps of the colon and rectum are most often benign. This means they are not a cancer and do not spread. You may have one or many polyps. They become more common with age. There are many types of polyps.

Adenomatous polyps are a common type. They are gland-like growths that develop on the mucous membrane that lines the large intestine. They are also called adenomas and are most often one of the following:

Tubular polyp, which protrudes out in the center of the colon
Villous adenoma, which is flat and spreading, and is more likely to become a cancer

When adenomas become cancerous, they are known as adenocarcinomas. Adenocarcinomas are cancers that originate in glandular tissue cells. Adenocarcinoma is the most common type of colorectal cancer."

For more information, please follow the link listed below!

https://medlineplus.gov/ency/article/000266.htm