Uterine Fibroids: A Complete Patient Guide

Overview

Uterine fibroids (also called leiomyomas or myomas) are firm, non-cancerous tumors that grow from the muscle wall of the uterus. They can be as small as a seed or larger than a grapefruit, and a woman may have one or many. Fibroids are extremely common during the reproductive years and usually shrink after menopause when hormone levels drop. They are almost never cancerous and do not raise the risk of uterine cancer for most people.

Signs & Symptoms

Many fibroids cause no symptoms and are found only during a routine exam or imaging. When symptoms do occur, they often relate to the size, number, and location of the growths.

• Heavy or prolonged menstrual bleeding (menorrhagia) that soaks through pads or tampons quickly
• Pelvic pressure, fullness, or a feeling of heaviness in the lower abdomen
• Pain during periods or intercourse
• Frequent urination or difficulty emptying the bladder if fibroids press on the bladder
• Constipation or rectal pressure if fibroids press on the bowel
• Lower-back or leg pain
• Anemia-related fatigue from chronic blood loss
• Difficulty conceiving or recurrent pregnancy loss in some cases

Causes & Risk Factors

The exact cause is not fully known, but fibroids are linked to the hormones estrogen and progesterone, which stimulate the uterine lining during the menstrual cycle. Growth factors and genetic changes inside muscle cells also play a role. Risk factors include being of reproductive age, Black race (higher incidence and earlier onset), family history of fibroids, obesity, early onset of periods, never having given birth, and vitamin D deficiency. Pregnancy and menopause often change fibroid size because of hormone shifts.

Diagnosis

Your clinician will start with a detailed history of your menstrual cycles, symptoms, and family history, followed by a pelvic exam to feel for an enlarged or irregular uterus. Imaging confirms the diagnosis and maps the fibroids.

• Pelvic ultrasound (transabdominal or transvaginal) – first-line, painless imaging that shows size and location
• Saline-infusion sonohysterography or hysteroscopy – better views of fibroids inside the uterine cavity
• Magnetic resonance imaging (MRI) – detailed mapping when surgery or specialized procedures are planned
• Blood tests – complete blood count to check for anemia; sometimes hormone levels
• Endometrial biopsy – occasionally done if heavy bleeding raises concern for other conditions

Treatment & Management

Treatment is individualized. If fibroids are small and asymptomatic, “watchful waiting” with regular check-ups is often enough. When symptoms interfere with daily life, options range from medicines to procedures to surgery. Choice depends on severity of symptoms, desire for future pregnancy, fibroid location, and overall health.

Living With It

Most women with fibroids lead full, active lives. Tracking periods, managing iron levels, and staying in regular contact with your gynecologist help you stay ahead of symptoms. Lifestyle measures that support overall health—maintaining a healthy weight, getting enough vitamin D, and managing stress—may also help keep symptoms more manageable. Emotional support matters; heavy bleeding and pelvic pressure can affect work, intimacy, and self-image, so consider talking with a counselor or joining a patient support community.