[Changes in the endometrium in treatment of breast carcinoma with tamoxifen]

A group of twenty postmenopausal breast cancer patients treated with tamoxifen was used for examination of the endometrial morphology, role of transvaginal sonography, and consequences of insufficient collaboration between gynaecologist and oncologist. One case of endometrial carcinoma, one case of abnormal hyperplasia, and ten endometrial polyps in asymptomatic patients support the need for routine transvaginal sonography as a screening method. Any uterine bleeding should be evaluated by hysteroscopy.