Are colon polyps dangerous?

Most polyps are not dangerous. Most are benign, which means they are not cancer. But over time, some types of polyps can turn into cancer. Usually, polyps that are smaller than a pea aren't harmful. But larger polyps could someday become cancer or may already be cancer. To be safe, doctors remove all polyps and test them.

Colon polyp

source: http://digestive.niddk.nih.gov/ddiseases/pubs/colonpolyps_ez/index.htm