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NCI Dictionary of Cancer Terms


modified radical mastectomy  listen  (MAH-dih-FIDE RA-dih-kul ma-STEK-toh-mee)

  Surgery for breast cancer in which the breast, most or all of the lymph nodes under the arm, and the lining over the chest muscles are removed. Sometimes the surgeon also removes part of the chest wall muscles.

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Modified radical mastectomy. The drawing on the left shows the removal of the breast, most or all of the lymph nodes under the arm, the lining over the chest muscles and sometimes part of the chest wall muscles. The drawing on the right shows a cross-section of the breast including the chest wall (ribs and muscle), fatty tissue, and the tumor.