Which benign tumors are known to cause heavy menstrual bleeding?

Uterine leiomyomas, commonly known as fibroids, are benign tumors that can cause heavy menstrual bleeding due to their presence and size within the uterine cavity. These tumors can distort the normal architecture of the uterus, leading to alterations in menstrual flow. They may subvert the lining of the uterus or grow within the uterine wall or cavity, which can result in increased surface area where menstrual bleeding occurs, thus contributing to heavy menstrual periods.

While fibromas and adenomyosis also can be associated with heavy menstrual bleeding, uterine leiomyomas is the most accurate term when referring specifically to these benign tumors that are known for causing this symptom, as leiomyomas are essentially the same as fibroids, with a focus on their role in menstrual irregularities. Cysts do not typically lead to heavy bleeding; they are often asymptomatic or may be associated with other mild symptoms but not predominantly heavy menstrual bleeding.