NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,198 terms related to cancer and medicine.

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EUS
A procedure in which an endoscope is inserted into the body. An endoscope is a thin, tube-like instrument that has a light and a lens for viewing. A probe at the end of the endoscope is used to bounce high-energy sound waves (ultrasound) off internal organs to make a picture (sonogram). Also called endoscopic ultrasound and endosonography.