title: Factors associated with mammographic parenchymal patterns.
abstract: The relationship between mammographic parenchymal patterns and known risk factors for breast cancer was studied in 5319 consecutive women presenting for breast screening. Using a multivariate analysis, correlations were found in pre-menopausal women between breast size, weight, age at first pregnancy, history of biopsy and history of cyclical breast pain and parenchymal pattern. In post-menopausal women the parenchymal pattern correlates with breast size, weight, weight change, age at first pregnancy, a history of biopsy and a history of breast feeding. The DY pattern correlated with age, breast size, weight, history of biopsy and menopausal status. When pre-menopausal women were considered separately the DY pattern correlated only with weight and breast size.
authors.affiliation: University Department of Surgery, Royal Liverpool Hospital.
authors.forename: S J
authors.initials: SJ
authors.lastname: Leinster
authors.forename: P V
authors.initials: PV
authors.lastname: Walsh
authors.forename: G H
authors.initials: GH
authors.lastname: Whitehouse
authors.forename: A M
authors.initials: AM
authors.lastname: al-Sumidaie
mesh_terms: D000367:Age Factors; D001835:Body Weight; D001940:Breast / Q000473:pathology*; D001942:Breast Feeding; D001943:Breast Neoplasms / Q000209:etiology / Q000473:pathology*; D004739:England; D005260:Female; D006801:Humans; D008327:Mammography; D008423:Maternal Age; D008593:Menopause; D011247:Pregnancy; D012307:Risk Factors