Absence of an effect of injectable and implantable progestin-only contraceptives on subsequent risk of breast cancer.

@article{Strom2004AbsenceOA,
  title={Absence of an effect of injectable and implantable progestin-only contraceptives on subsequent risk of breast cancer.},
  author={Brian L. Strom and Jesse A Berlin and Anita L. Weber and Sandra A. Norman and Leslie Bernstein and Ronald T. Burkman and Janet R. Daling and Dennis M. Deapen and Suzanne G. Folger and Kathleen E. Malone and Polly A. Marchbanks and Michael S Simon and Giske A Ursin and Linda K. Weiss and Robert Spirtas},
  journal={Contraception},
  year={2004},
  volume={69 5},
  pages={353-60}
}
Animal data indicate that both estrogens and progestins could be carcinogenic and that progestins could serve as tumor promoters. Human studies have not confirmed an increased risk of breast cancer from long-term use of oral contraceptives, but have shown an increased risk from hormone replacement therapy including progestins. The present study analyzed the relationship between breast cancer and use of injectable and implantable progestin-only contraceptives. Analyses were performed on data… CONTINUE READING

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