[Significance of peristernal lymph node excision in radical surgery of breast tumor and the follow-up study].
D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000601:surgery*; D005500:Follow-Up Studies; D006801:Humans; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis / Q000601:surgery*; D008408:Mastectomy; D008722:Methods; D008875:Middle Aged; D011379:Prognosis; D013249:Sternum; D013997:Time Factors