Why Have A Sigmoidoscopy Instead Of A Colonoscopy?

Why Have A Sigmoidoscopy Instead Of A Colonoscopy? Sigmoidoscopy is less invasive than colonoscopy and carries a lower risk of the colon being perforated, which may make it more acceptable as a screening test to some patients,” said Barnett Kramer, M.D., director of NCI’s Division of Cancer Prevention. Will a sigmoidoscopy show cancer? A sigmoidoscopy