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Pelvic Pain Caused by Uterine Fibroids

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Updated June 11, 2014

What Uterine Fibroids Are:

Uterine fibroids can be a cause of women's pelvic pain. Uterine fibroids are abnormal tissue masses found either in the walls or on the outside of the uterus. They are almost always benign (noncancerous). At least 20% of women are thought to have them, though not all have symptoms.

The cause of uterine fibroids is largely unknown, though they occur more frequently in women in their 30s and 40s, especially those with a family history of fibroids. They are also more common in black women. A diet high in red meat and obesity may increase a woman's risk of developing uterine fibroids.

Symptoms of Uterine Fibroids:

While some women never know they have fibroids, those who do have symptoms commonly experience:
  • pelvic pain
  • dysmenorrhea (painful menstrual period)
  • pain during sex
  • abnormally heavy menstrual flow
  • urinary urgency
  • low back pain
  • infertility (usually only in severe cases)
For some women, symptoms of uterine fibroids are mild and easily treated. For others, uterine fibroids cause chronic pelvic pain that can interfere with their quality of life.

Diagnosing Uterine Fibroids:

Uterine fibroids can be detected by an ultrasound, sometimes performed by filling the uterus with water (sonohysterogram). Other scans for uterine fibroids include x-rays, MRIs and CT scans. Your doctor may also order a hysterosalpingogram, in which the uterus is filled with dye before x-rays are taken.

Sometimes, a more invasive procedure is required to accurately diagnose uterine fibroids. In a hysteroscopy, a scope with a small camera is inserted into the uterus. In a laparoscopy, it is inserted through a small incision in the abdomen. Each can be used to diagnose uterine fibroids, as well as to remove them.

Treating Uterine Fibroids:

If your uterine fibroids are problematic or if they cause chronic pelvic pain, you may receive any of the following:
  • Pain medications such as over-the-counter or prescription NSAIDs can control mild to moderate pelvic pain caused by uterine fibroids.
  • Gonadotropin releasing hormone agonists (GnRHas) can sometimes shrink fibroids, though fibroids may return again.
  • Hormone treatments such as birth control pills or progesterone injections can decrease fibroid growth.
  • Surgery, such as a myomectomy, hysterectomy, endometrial ablation or uterine fibroid embolization may be performed if other approaches are not effective.

Prognosis for Uterine Fibroids:

The prognosis for pelvic pain caused by uterine fibroids is variable. Some women find that their pain can be controlled effectively with medications such as NSAIDs and/or hormonal treatments. In some women, however, surgery is the only option. While surgery is often very effective at treating uterine fibroids, some options (such as hysterectomy and endometrial ablation) may leave a woman infertile.

Uterine fibroids decrease in size and symptoms are usually diminished once menopause begins.

Sources:

Lippman, SA et al. Uterine Fibroids and Gynecologic Pain Symptoms in a Population-Based Study. Fertility and Sterility. 2003 Dec;80(6):1488-94

The Merck Manuals Online Medical Library. Uterine Fibroids. Accessed 7/30/09. http://www.merck.com/mmpe/sec18/ch248/ch248a.html

National Institute of Child Health and Human Development. Uterine Fibroids. 12/9/2005. http://www.nichd.nih.gov/publications/pubs/upload/uterine_fibroids_2005.pdf

U.S. Department of Health and Human Services. Uterine Fibroids: Frequently Asked Questions. Accessed 7/30/09. http://www.womenshealth.gov/faq/uterine-fibroids.cfm

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