American College of Surgeons

People over 60 years old are more likely to have precancerous or cancerous polyps develop in a part of the colon that goes unseen by flexible sigmoidoscopy, a common screening test for colon and rectal cancer, a new study finds. Study results suggest the need for reviewing and possibly revising national colon cancer screening guidelines, study authors said at the 2013 Clinical Congress of the American College of Surgeons.