原発性両側性乳癌の検討

Abstract

Of 327 cases who underwent mastectomy for cancers of the breast at Hoshigaoka Hospital from March, 1972, to June, 1990, 7 cases proved to have primary cancer in both breasts according to the established criteria, of which 3 cases, a rate of occurrence of 0.9%, were synchronous, and the other 4 cases, a rate of 1.2%, were metachronous. Our cases were mostly detected in the early stage, and prognoses were favorable. This study indicated that after mastectomy the opposite breast should be checked periodically for a long time, especially in nulliparous patients.