NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,944 terms related to cancer and medicine.

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upper endoscopy
(UH-per en-DOS-koh-pee)
Examination of the inside of the stomach using an endoscope, passed through the mouth and esophagus. An endoscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue to be checked under a microscope for signs of disease. Also called gastroscopy.