Endoscopy: Examination of the inside of the body by using a lighted, flexible instrument called an endoscope. In general, an endoscope is introduced into the body through a natural opening such as the mouth or anus. Although endoscopy can include examination of other organs, the most common endoscopic procedures evaluate the esophagus, stomach, and portions of the intestine.
Quick GuideDigestive Disorders: Common Misconceptions
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Last Editorial Review: 5/13/2016