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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An endoscopy isn't usually painful, and most people only experience some mild discomfort, similar to indigestion or a sore throat. The procedure is usually carried out while you're conscious. You may be given a local anaesthetic to numb a specific area of your body.