title: Discussion.
mesh_terms: D001943:Breast Neoplasms / Q000601:surgery*; D018270:Carcinoma, Ductal, Breast / Q000601:surgery*; D018275:Carcinoma, Lobular / Q000601:surgery*; D005260:Female; D006801:Humans; D008408:Mastectomy / Q000639:trends*