NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 8,201 terms related to cancer and medicine.

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A procedure that uses ultrasound (high-energy sound waves that are bounced off internal tissues and organs) during surgery. Sonograms (pictures made by ultrasound) of the inside of the body are viewed on a computer to help a surgeon find tumors or other problems during the operation. Also called intraoperative ultrasound.