[Genital metastases from breast cancer: study of 3 cases and literature review]. / Métastases génitales du cancer du sein: étude de 3 cas et revue de la littérature.

ABSTRACT

Breast cancer is the most common cancer among women. Prognosis depends, in large part, on the presence of metastases. Liver, skeleton and lungs are the most frequent metastatic sites, whereas genital metastases are more rare and less known. The detection of an ovarian mass in a woman with a history of breast cancer raises the question of its primary or secondary origin. The frequency of ovarian metastases reported in the literature is approximately 20-30%. However, when an ovarian mass is detected in a woman with breast cancer, primary ovarian tumor is diagnosed three times more often than a metastasis. Cervical, uterine or corporeal metastases are even more rare. They are often diagnosed late, due to their clinical latency; transvaginal ultrasound coupled with Color Doppler and Pap smear must be performed as first-line examinations knowing that their screening performance in patients with ovarian masses is deemed low. An increase in CA 15-3 and CEA tumor markers must lead clinicians to investigate for metastases, but it doesn't provide diagnostic orientation toward a specific metastatic site. Finally, only anatomo-athological examination allows certain diagnosis. We here report 3 cases of genital metastases from primary breast cancer (two patients with ovarian metastases and one patient with cervico-uterine metastasis) in order to highlight the role of accurate and regular genital examination in the monitoring of patients with breast cancer and to discuss the predictive factors for their occurrence.