Can uterine fibroids completely prevent pregnancy?

Uterine fibroids do not completely prevent pregnancy in all cases; many women with fibroids can conceive without issues. However, in some cases, fibroids can affect fertility, cause difficulty in conceiving, or lead to pregnancy loss or complications in fetal growth or childbirth [1].

Uterine fibroids are very common benign (non-cancerous) tumors made of muscle cells and other tissues that grow in and around the uterine wall. These fibroids can vary in number and size, growing as a single mass or in clusters [1].

How do fibroids affect fertility?

How fibroids affect fertility depends on several factors, including the location, size, and number of existing fibroids. Fibroids can impact fertility in several ways:

• Changing the shape of the uterus: Large fibroids or those located in the uterine cavity may distort the shape of the uterus, which can hinder the implantation of a fertilized egg [2].
• Fallopian tube blockage: In rare cases, fibroids may press against the fallopian tubes, preventing sperm from reaching the egg or obstructing the passage of the fertilized egg to the uterus.
• Effects on the uterine lining: Some fibroids can affect the uterine lining (endometrium), making it less suitable for embryo implantation.

Types of fibroids and their impact

Not all fibroids affect fertility to the same degree. Fibroids that grow inside the uterine cavity (submucosal) are the most likely to affect the ability to conceive or increase the risk of miscarriage [1]. Fibroids growing within the uterine wall (intramural) may also have an impact if they are very large or multiple. Conversely, fibroids that grow outside the uterine wall (subserosal) typically have less impact on fertility unless they are very large and compress adjacent organs.

Treatment options to increase the chances of pregnancy

If fibroids are causing fertility issues, a doctor may recommend treatment options. Treatment depends on several factors, including your symptoms, age, the location and size of the fibroids, and your desire for future pregnancy [1]. Options may include:

• Myomectomy: This is a surgical procedure to remove the fibroids while preserving the uterus, which allows for future pregnancy [2]. This surgery can be performed in different ways, including open surgery, laparoscopy, or vaginally, depending on the size and location of the fibroids.
• Medication: Some medications can help reduce the size of fibroids or control symptoms like heavy bleeding, but they are generally not used as a long-term solution for fertility [2].

When should you see a doctor?

If you are having difficulty conceiving or have experienced recurrent miscarriage and have a history of uterine fibroids, it is important to consult a gynecologist or a fertility specialist. The doctor will evaluate your condition to determine if the fibroids are the cause of your fertility issues and discuss the best available treatment options for you [1]. Diagnosis may include tests such as a pelvic ultrasound [2].

For more information about uterine fibroids and their impact on fertility and pregnancy, you can visit Uterine Fibroids and Their Impact on Fertility and Pregnancy (Arabic).

Medical references

• Uterine Fibroids
• Uterine Fibroids