NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,659 terms related to cancer and medicine.
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- listen (prok-TOS-koh-pee)
- A procedure that uses a proctoscope to look inside the anus and rectum. A proctoscope 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.