Definitions for "Lumpectomy"
the removal of a cyst or tumor from the breast by surgery. This is one method of treating breast tumors when in an early stage, and is preferred for cosmetic reasons, when medically feasible, to radical mastectomy, the removal of the entire breast along with nearby muscles.
surgery to remove the cancerous lump and a portion of normal tissue around the breast cancer lump. The surgeon may also remove some of the lymph nodes under the arm to determine if the cancer has spread.
a surgical procedure to remove a lump in the brease with a margin (or rim) of normal tissue. (See Wide Local Excision.)