Discontinue if atypical hyperplasia develops. Increased incidence of endometrial changes including hyperplasia, polyps & cancer. Patients w/ liver & kidney disease, DM, history of thromboembolic disease, visual disturbances. Perform gynaecological & internal exams prior to & at least 6-mthly intervals during treatment; ophth exam; lung & bone x-ray & liver ultrasound to see possible early metastasis. Contraceptive measures should be taken at least 3 mth after end of therapy. Not recommended during lactation.