NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,861 terms related to cancer and medicine.

Browse the dictionary by selecting a letter of the alphabet or by entering a cancer-related word or phrase in the search box.

invasive procedure
(in-VAY-siv proh-SEE-jer)
A medical procedure that invades (enters) the body, usually by cutting or puncturing the skin or by inserting instruments into the body.