Polyps are abnormal growths of tissue that can be found in any organ that has blood vessels. They are most often found in the colon, nose, or uterus. Most polyps are noncancerous (benign).However, because polyps are due to abnormal cell growth, they can eventually become cancerous (malignant).Whether or not a polyp is cancerous can be determined with a biopsy.ost polyps are noncancerous (benign). However, because polyps are due to abnormal cell growth, they can eventually become cancerous (malignant). Whether or not a polyp is cancerous can be determined with a biopsy.