Some intermural leiomyomas affect menstruation and some do not, and there is a correlation between whether or not they affect menstruation and the size of the leiomyoma. If the tumor is small, it usually does not affect menstruation, and if the tumor is large, it may affect menstruation. If the fibroid tumor is small, it usually does not affect menstruation. If the fibroid tumor is large, it may make the uterine cavity and endometrial area larger, which may lead to increased menstruation or prolonged menstruation; if the fibroid tumor is large, especially if it is accompanied by abnormal menstruation or grows rapidly in a short period of time, it is recommended to give treatment, and the treatment is mostly based on surgical treatment. If you have uterine interstitial fibroids with abnormal menstruation, you need to consult a doctor to determine whether the abnormal menstruation is caused by uterine fibroids or other reasons, and then find out the cause and give the next step under the doctor’s guidance.