NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 7,899 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.
- listen (KWAD-ran-TEK-toh-mee)
An operation to
remove the cancer and some normal tissue around it, but not
the breast itself. Some lymph nodes under the arm may be
removed for biopsy. Part of the chest wall lining may also
be removed if the cancer is near it. Also called breast-conserving surgery, breast-sparing surgery, lumpectomy, partial mastectomy, and segmental mastectomy.