Risk factors for benign ovarian teratomas

F. Parazzxini, C. La Vecchia, E. Negri, S. Moroni, A. Villa

Research output: Contribution to journalArticlepeer-review


Risk factors for benign ovarian teratomas have been analysed in a case-control study conducted in Milan. Cases were women aged less than 65 years with a histologically confirmed diagnosis of benign ovarian teratoma who were admitted to a network of Obstetrics and Gynecology Departments in Milan. A total of 77 women aged 16-64 were interviewed. Controls were women admitted to hospital for acute, non-gynaecological, non-hormonal and non-neoplastic diseases; 231 controls were interviewed (age range 15-64 years). Cases tended to be more educated: in comparison with women with less than 7 years of education, the estimated relative risk (RR) of ovarian benign teratoma was 1.6 and 2.5 respectively in women with 7-11 and 12 or more years of schooling, the trend in risk being statistically significant (χ2 1 trend 5.39, P2 1 0.53, P = not significant). No relation emerged between marital status, age at menarche, menstrual cycle pattern, menopausal status, abortions, age at first pregnancy, oral contraceptive use and risk of ovarian benign teratomas.

Original languageEnglish
Pages (from-to)644-646
Number of pages3
JournalBritish Journal of Cancer
Issue number3
Publication statusPublished - 1995


  • Benign ovarian teratoms
  • Reproductive factors
  • Risk factors

ASJC Scopus subject areas

  • Cancer Research
  • Oncology


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