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Thickened endometrial lining during menopause could be suggestive of endometrial hyperplasia, endometritis, endometrial cancer etc. Look out for development of any other new symptoms. If needed, her treating gynecologist would get an endometrial biopsy done to confirm/rule out cancerous changes. Treatment as appropriate would be started to help her (based on examination findings and investigations results). She should consider being in regular monitoring and follow-up with her treating doctor/gynecologist and report any new/abnormal symptoms immediately. Drink plenty of water. Take adequate rest.
Take care.