[Attempt for modified radical mastectomy in the treatment of early breast cancer].

Until five years ago the Aichi Cancer Center had adopted the standard radical mastectomy where breast, major and minor pectoral muscles, and axillary adipose tissues were resected en bloc. In case tumor was found at the inner half or the center of the breast, parasternal lymph node dissection was concomitantly carried out. Recently, however, we begin to perform Auchincloss by which major and minor pectoral muscles can be conserved, as an attempt for modified radical mastectomy. In some cases, furthermore, breast conserving operation is made. The reasons why we changed the operation methods are: 1) Due to the advancement of diagnostic imaging and widespread self examination, percentage of early breast cancer has considerably increased. 2) Postoperative adjuvant therapy, especially adjuvant endocrine therapy, has remarkably progressed.