An endoscope is a flexible fiberoptic scope with a light that helps a doctor see inside certain internal organs. When the scope is inserted through the mouth, the lining of the esophagus, stomach, and upper duodenum can be visually examined for any abnormalities or growths. An endoscope allows the doctor to take a biopsy of any suspicious areas.
Harvey Simon, MD, Editor-in-Chief, Associate Professor of Medicine, Harvard Medical School; Senior Physician, Massachusetts General Hospital.
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