Aunt has blood clots. Why?

Menstruation blood is usually dark red, there may be a small amount of blood clots. If the aunt has blood clots, but the menstrual volume is in the normal range, then it does not matter. Normal menstrual volume is generally 20 to 60 ml, more than 80 ml for menorrhagia. If the aunt has blood clots, menstrual volume more than 80 ml, then you need to see a doctor in time. Menorrhagia, can be seen in uterine structural lesions, such as uterine fibroids, adenomyosis, endometrial polyps, endometrial atypical hyperplasia and endometrial cancer, can also be seen in the non-structural factors of the uterus, such as coagulation dysfunction, ovulation dysfunction, upper ring, endometrial arteriovenous fistula, etc., in addition to whether there is incomplete abortion and cervical cancer, resulting in more vaginal bleeding.