NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,989 terms related to cancer and medicine.

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gastroscopy
(gas-TROS-koh-pee)
Examination of the inside of the stomach using a gastroscope passed through the mouth and esophagus. A gastroscope 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 upper endoscopy.