Endoscopy is a nonsurgical procedure used to

examine a person's digestive tract. Using an 

endoscope, a flexible tube with a light and

camera attached to it, your doctor can view

pictures of your digestive tract on a color TV

monitor.

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           Upper endoscopy, also known as EGD, is a procedure in

           which a thin scope with a light and camera at its tip is

           used to look inside the upper digestive tract -- the

           esophagus, stomach, and first part of the small intestine,

           called the duodenum.

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           Colonoscopy is a test that allows your doctor to look at

           the inner lining of your large intestine (rectum and

           colon). He or she uses a thin, flexible tube called a

           colonoscope to look at the colon. A colonoscopy helps

           find ulcers, colon polyps, tumors, and areas of

           inflammation or bleeding.