What is the most common benign tumor of the uterus?

Uterine leiomyomas, commonly known as uterine fibroids, represent the most prevalent benign tumors found in the female reproductive system. These tumors arise from the smooth muscle layer of the uterus (myometrium) and can vary in size, number, and location. They can range from small, undetectable lesions to large masses that can cause significant symptoms, including heavy menstrual bleeding, pelvic pain, and pressure effects. Most women will experience fibroids at some point in their lives, making them a common clinical finding, especially in women of reproductive age.

While other options mention conditions such as ovarian cysts and endometrial polyps, these are not classified in the same category as uterine leiomyomas. Ovarian cysts are fluid-filled sacs that develop on the ovaries and are often transient, while endometrial polyps are localized growths in the lining of the uterus. Neither has the same ubiquity or benign fibromatous characteristics as leiomyomas, which directly relate to their histological origin and clinical significance. Therefore, the recognition of uterine leiomyomas as the foremost benign tumor is grounded in their prevalence, symptomatology, and gynecological relevance.