31
Oct
2014
Early-stage colon cancer generally begins as a polyp, a growth that protrudes from the colon wall. Some polyps can turn into cancer, but regular screenings can help detect these polyps so they can be removed before they become cancerous. That's why regular screening for people over 50 and those at high risk of developing colon cancer is so important.
There are five main types of colon cancer screenings, including:- Fecal occult blood test. A series of stool samples are taken and examined for hidden blood, since some polyps and cancers bleed. If blood is found in the stool sample, your doctor may order a colonoscopy for further evaluation.
- Double contrast barium enema. Liquid containing a contrast dye (to help it show up on an X-ray) is introduced into the colon through the rectum, and the area is X-rayed to check for polyps or abnormal lesions. If a polyp is found on the X-ray, a colonoscopy will be done as a follow-up test.
