There are some masses on the uterus that disappear on their own, such as fibroids or adenomyomas. When a woman’s estrogen drops after menopause, fibroids can shrink or even disappear. In addition, adenomyoma is mainly caused by endometriosis. After menopause, women no longer experience localized bleeding, so the adenomyoma shrinks significantly or even disappears. It is recommended that if you find a lump in your uterus, you should know what is causing it. If it is a case of uterine fibroids, it is recommended to give regular review. In case of adenomyoma, there are often symptoms of dysmenorrhea and it is recommended to give medication for treatment.