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What is the Relationship Between Fibroids and Infertility?

Fibroids are very common – they are benign (non cancerous) tumors of the uterine muscle. The size and location of the fibroid are important. The large majority of them are very small or located in an area of the uterus such that they will not have any impact on reproductive function.They occur predominantly in premenopausal women, and their growth appears to be hormone (estradiol, progesterone) dependent. They may grow towards the uterine cavity (submucous) or towards the abdominal cavity (subserosal), or they may be located within the uterine wall (intramural).

Most women will develop fibroids during their life time. Typically, fibroids develop when a woman is in her thirties or forties.

There are 3 general locations for fibroids:

  1. Subserosal – on the outside surface of the uterus
  2. Intramural – within the muscular wall of the uterus
  3. Submucous – bulging in to the uterine cavity

The only type that is supposed to have a large impact on reproductive function (unless they are large or numerous) is the submucous type that pushes in to the uterine cavity. 

Fibroids in general, regardless of location, were associated with a 15% reduction in pregnancy rates, a 30% reduction in live birth rates, and a 67% increase in miscarriage rates when compared with controls without fibroids. The effect was especially pronounced when submucous fibroids were analyzed (64% reduction in pregnancy rates, 69% reduction in live birth rates, and 67% increase in miscarriage rate). The effect of intramural fibroids was significant but less pronounced (22% decrease in live birth rates, 89% increase in miscarriage rates).

Fibroids can reduce your fertility in these ways:

  • Fibroids that change the shape of your cervix can affect the number of sperm able to enter the uterus.
  • Fibroids that block the Fallopian tubes can make the journey of a fertilized egg to implantation difficult or impossible.
  • Fibroids which change the shape of your uterus may decrease the number of places an embryo can successfully implant or reduce uterine space needed for embryo development.
  • Fibroids that weaken the lining of the uterine cavity or decrease the blood supply to a growing embryo can cause miscarriage.

Removing fibroids to improve the chance for conception and pregnancy may be recommended.  If you have fibroids and are trying to get pregnant, it’s important to discuss with your doctor whether the fibroids are in places that might prevent you from doing so, or are in places that could cause complications in pregnancy. Immediately contact Mrs. Sarah Hussain, top female gynecologist in London. She will analyse your  condition and suggest the best solution .