Abnormal uterine bleeding as a presentation of metastatic breast disease in a patient with advanced breast cancer on tamoxifen therapy

Introduction Extra pelvic tumours rarely metastasise to the female genital tract. Typically it is the ovaries that are involved and the primary tumours include the breast and the gastrointestinal tract. Metastatic disease involving the uterus is rare.Case report A case of metastatic breast carcinoma involving both the uterine corpus and cervix is described. The patient was known to have advanced breast carcinoma and was on tamoxifen therapy when she presented with postmenopausal bleeding. Histological assessment of the hysterectomy specimen including immunohistochemistry staining confirmed the breast carcinoma as the primary.Conclusion Unusual uterine bleeding in a patient with breast cancer, should alert the gynaecologist to the possibility of metastatic breast disease regardless of tamoxifen treatment.