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Contemporary hormonal contraception and cervical cancer in women of reproductive age.
Iversen, Lisa; Fielding, Shona; Lidegaard, Øjvind; Hannaford, Philip C.
Afiliación
  • Iversen L; Academic Primary Care, Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK.
  • Fielding S; Medical Statistics Team, Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK.
  • Lidegaard Ø; Department of Gynaecology, Rigshospitalet, The Juliane Marie Centre, University of Copenhagen, Copenhagen, Denmark.
  • Hannaford PC; Academic Primary Care, Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK.
Int J Cancer ; 2021 Apr 05.
Article en En | MEDLINE | ID: mdl-33818778
To determine cervical cancer risk associated with contemporary hormonal contraceptives, we conducted a cohort study of women aged 15 to 49 living in Denmark from 1995 to 2014, using routinely collected information about redeemed prescriptions, incident cancer and potential confounders. Poisson regression calculated adjusted cervical cancer risks among different contraceptive user groups by duration of use, time since last use, hormonal content and cancer histology. During >20 million person-years, 3643 incident cervical cancers occurred. Ever users of any hormonal contraceptives compared to never users had a relative risk (RR) of 1.19 (95% confidence interval [CI] 1.10-1.29). Increased risks were seen in current or recent users of any hormonal: RR 1.30 (95% CI 1.20-1.42) and combined: RR 1.40 (95% CI 1.28-1.53), but not progestin-only contraception: RR 0.91 (95% CI 0.78-1.07). Current or recent users of any hormonal contraception had an increased risk of both adenocarcinoma (RR 1.29, 95% CI 1.05-1.60) and squamous cancer (RR 1.31, 95% CI 1.19-1.44). The risk pattern among any hormonal and combined contraceptive users generally increased with longer duration of use and declined after stopping, possibly taking longer to disappear among prolonged users. Combined products containing different progestins had similar risks. Approximately one extra cervical cancer occurred for every 14 700 women using combined contraceptives for 1 year. Most women in our study were not vaccinated against human papillomavirus (HPV) infections. Our findings reinforce the urgent need for global interventions such as systematic screening, treatment of cervical intraepithelial neoplasia and HPV vaccination programmes to prevent cervical cancer, especially among users of combined contraceptives.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Etiology_studies / Observational_studies / Risk_factors_studies Idioma: En Revista: Int J Cancer Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Etiology_studies / Observational_studies / Risk_factors_studies Idioma: En Revista: Int J Cancer Año: 2021 Tipo del documento: Article Pais de publicación: Estados Unidos