Tamoxifen treatment in premenopausal breast cancer patients may be associated with ovarian overstimulation, cystic formations and fibroid overgrowth
1994

Tamoxifen Treatment and Ovarian Changes in Premenopausal Breast Cancer Patients

Sample size: 10 publication Evidence: low

Author Information

Author(s): I. Cohen, D.J.D. Rosen, M. Altaras, Y. Beyth, J. Shapira, D. Yigael

Primary Institution: Sapir Medical Center, Kfar Saba, Israel

Hypothesis

Tamoxifen treatment in premenopausal breast cancer patients may lead to ovarian overstimulation and morphological changes.

Conclusion

Tamoxifen treatment in premenopausal breast cancer patients is associated with ovarian cyst formation and fibroid overgrowth.

Supporting Evidence

  • Tamoxifen-treated patients had persistent bilateral ovarian simple cysts.
  • Oestrogen levels in tamoxifen-treated patients were significantly higher than in non-treated patients.
  • Some patients experienced progressive growth of fibroid uteri during treatment.

Takeaway

Women taking tamoxifen for breast cancer might develop cysts in their ovaries and have changes in their uterus, which can cause health problems.

Methodology

The study involved a survey of premenopausal breast cancer patients, comparing those treated with tamoxifen to those who were not, using vaginal ultrasounds and hormonal assessments.

Limitations

The study is based on a small sample size of five tamoxifen-treated patients.

Participant Demographics

All participants were premenopausal breast cancer patients.

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