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2. Sigmoidoscopy and Colonoscopy

Another GI endoscopy looks at the lower GI tract. A sigmoidoscopy examines the rectum and lower colon, and a colonoscopy checks the entire colon and rectum. These tests look for early signs of colon cancer and are routine for people over 50. Doctors also use them to look for causes of abdominal pain, rectal bleeding, unexplained weight loss, or unexplained changes in bowel habits.

Sigmoidoscopy Colonoscopy Lower GI Elena KHarchenko / Getty Images

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Disclaimer

This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.