NCI Dictionary of Cancer Terms

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The NCI Dictionary of Cancer Terms features 7,856 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.

stage IV non-small cell lung cancer
(... sel lung KAN-ser)
The tumor may be any size and cancer may have spread to lymph nodes. One or more of the following is true: (1) there are one or more tumors in both lungs; (2) cancer is found in fluid around the lungs or the heart; and/or (3) cancer has spread to other parts of the body, such as the brain, liver, adrenal glands, kidneys, or bone.