title: Characteristics of cystic breast disease with special regard to breast cancer development.
abstract: BACKGROUND
  This prospective study compares the characteristics of cystic disease of the breast (CDB) of patients who developed breast cancer (BCa) during the follow-up (1.25-4 years) period with those who did not.
  
  
  METHODS
  K+, Na+, albumin, dehydroepiandrosterone (DHA), DHA-sulphate, oestrone, oestradiol, testosterone and progesterone levels were determined in breast cyst fluid (BCF). Patients presented data about their menstrual status, reproductive history, lactation period, date of first and the number of BCF aspirations, gynaecological interventions, use of oral contraceptives, family history of cancer, smoking habits and coffee consumption. The BCa incidence of patients was compared with the expected number of BCas in an age-matched group of 5143 women.
  
  
  RESULTS
  Out of 147 patients 6 developed BCa. The standardized incidence rate was 6.29. There were significant differences in testosterone, oestrone and progesterone levels and also reproductive history of patients who developed BCa compared with patients without BCa.
  
  
  CONCLUSIONS
  The above markers outline a subgroup of patients with the highest BCa risk.
authors: Clinical Research Department, National Institute of Oncology, Rath Gy. 7-9, 1122 Budapest, Hungary.
authors: B
authors: B
authors: Budai
authors: I
authors: I
authors: Számel
authors: Z
authors: Z
authors: Sulyok
authors: M
authors: M
authors: Német
authors: M
authors: M
authors: Bak
authors: S
authors: S
authors: Ottó
authors: M J
authors: MJ
authors: Reed
authors: A
authors: A
authors: Purohit
authors: D C
authors: DC
authors: Parish
authors: J
authors: J
authors: Kralovánszky
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000453:epidemiology* / Q000473:pathology; D003069:Coffee / Q000009:adverse effects; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects; D004970:Estrone / Q000032:analysis*; D005122:Exudates and Transudates / Q000737:chemistry; D005260:Female; D005348:Fibrocystic Breast Disease / Q000453:epidemiology* / Q000473:pathology; D006728:Hormones / Q000032:analysis; D006801:Humans; D006814:Hungary / Q000453:epidemiology; D015994:Incidence; D008875:Middle Aged; D011188:Potassium / Q000032:analysis; D011230:Precancerous Conditions / Q000453:epidemiology* / Q000473:pathology; D011374:Progesterone / Q000032:analysis*; D011446:Prospective Studies; D017584:Reproductive History; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology; D012964:Sodium / Q000032:analysis; D013739:Testosterone / Q000032:analysis*
chemical_list: D003069:Coffee; D003278:Contraceptives, Oral, Hormonal; D006728:Hormones; D004970:Estrone; D013739:Testosterone; D011374:Progesterone; D012964:Sodium; D011188:Potassium