Normal uterine thickness changes after menopause. Before menopause, thickness of the uterine lining increases from 1 to 3mm to 16mm, then sheds as the new cycle begins. For most post-menopausal women, the lining of the uterus should be 4 to 5mm thick.
HRT and the Uterine Lining
While normal uterine thickness averages 4 to 5mm after menopause, women who receive hormone replacement therapy (HRT) may have linings up to 8mm thick.
If your uterine lining is thicker than 5mm and you are not on HRT, further evaluation may be necessary to rule out various medical conditions.
Uterine linings thicker than 5mm may indicate abnormal cell growth (hyperplasia) or endometrial cancer.
Your physician will determine your uterine thickness with an ultrasound. If uterine thickness is abnormal, your doctor will schedule an endometrial biopsy to rule out abnormal cell growth or cancer.
If you have vaginal bleeding and are post-menopausal, see your physician for further evaluation. It may be an indication of a more serious condition.