title: Pregnancy-associated breast cancer and pregnancy following treatment for breast cancer, in a cohort of women from Victoria, Australia, with a first diagnosis of invasive breast cancer.
abstract: BACKGROUND
  This study examined pregnancy-associated breast cancer (PABC) and pregnancy following treatment for breast cancer.
  
  
  METHODS
  We analysed data from a questionnaire-based, prospective study of women diagnosed with breast cancer. Timing of diagnosis in relation to pregnancy was self-reported in the enrolment questionnaire. Women reported subsequent pregnancies in annual follow-up questionnaires, up to at least 5 years from diagnosis.
  
  
  RESULTS
  Women with PABC made up 3.3% of women <48 years at diagnosis and 14.3% of women aged <35 years at diagnosis. Nine of 46 (19.6%) women who were aged <40 years at diagnosis, and had either no children, or only one child, became pregnant subsequent to their diagnosis, and 8 experienced a live birth.
  
  
  CONCLUSIONS
  As the number of women with PABC was small, conclusions from this study are limited. However, young women should be alert to PABC, especially in the post-partum period. Some women, with incomplete families at diagnosis, are choosing to have one or more pregnancies following treatment.
authors.affiliation: Women's Health Program, School of Public Health and Preventive Medicine, Monash University, Level 6, 99 Commercial Rd, Melbourne, Victoria 3004, Australia. Electronic address: robin.bell@monash.edu.
authors.forename: Robin J
authors.initials: RJ
authors.lastname: Bell
authors.forename: Pamela
authors.initials: P
authors.lastname: Fradkin
authors.forename: Nishanthinie
authors.initials: N
authors.lastname: Parathithasan
authors.forename: Penelope J
authors.initials: PJ
authors.lastname: Robinson
authors.forename: Max
authors.initials: M
authors.lastname: Schwarz
authors.forename: Susan R
authors.initials: SR
authors.lastname: Davis
mesh_terms: D000328:Adult; D000367:Age Factors; D001943:Breast Neoplasms / Q000175:diagnosis / Q000453:epidemiology*; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D011247:Pregnancy; D011252:Pregnancy Complications, Neoplastic / Q000175:diagnosis / Q000453:epidemiology*; D011256:Pregnancy Outcome; D011446:Prospective Studies; D012307:Risk Factors; D011795:Surveys and Questionnaires; D014739:Victoria / Q000453:epidemiology
keywords: Post-partum; Pregnancy; Pregnancy-associated breast cancer