title: [Prognosis of premenopausal patients with operable breast cancer related to the timing of operation].
abstract: OBJECTIVE
  Determining the fact if the timing of mastectomy during the menstrual cycle influences the prognosis of premenopausal women with breast cancer.
  
  
  METHODS
  67 cases of breast cancer women with regular menstruation were reviewed and analyzed retrospectively by medical statistics in terms of 5-year overall survival, 5-year relapse-free survival and 5-year local-regional relapse survival.
  
  
  RESULTS
  Even though the 5-year overall survival and 5-year local-regional relapse survival were not different statistically, timing of operation did have a tendency to influence outcome. Meanwhile, estrogen receptor played the most important role in influencing the above-mentioned aspects in comparison with other factors.
  
  
  CONCLUSIONS
  We believe that operation during the last menstrual period might have influence on long-term survival of premenopausal breast cancer patients, but prospective studies are needed.
authors.affiliation: Department of Oncology, Guang An Men Hospital, China Academy of Traditional Chinese Medicine, Beijing.
authors.forename: P
authors.initials: P
authors.lastname: Zhang
authors.forename: W
authors.initials: W
authors.lastname: Hou
authors.forename: Z
authors.initials: Z
authors.lastname: Yang
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000601:surgery*; D005260:Female; D006801:Humans; D008408:Mastectomy; D008875:Middle Aged; D017697:Premenopause; D012189:Retrospective Studies; D015996:Survival Rate; D013997:Time Factors