title: Discussion.
mesh_terms: D001943:Breast Neoplasms / Q000601:surgery*; D018270:Carcinoma, Ductal, Breast / Q000601:surgery*; D018275:Carcinoma, Lobular / Q000601:surgery*; D005260:Female; D019983:Guideline Adherence / Q000706:statistics & numerical data*; D006801:Humans; D008197:Lymph Node Excision / Q000706:statistics & numerical data*; D015412:Mastectomy, Segmental; D010818:Practice Patterns, Physicians' / Q000706:statistics & numerical data*