If you’ve been diagnosed with a uterine fibroid, you may be wondering, “How fast do fibroids grow?” The answer varies. Some fibroids grow slowly, some grow in spurts, and others stay the same size or even shrink over time.
Fibroid growth can also vary between fibroids in the same uterus. Understanding how quickly fibroids can grow, what may influence growth, and when changes deserve closer attention can help you feel more confident about your care options.
How Fast Do Uterine Fibroids Grow?
There is no single growth rate that is considered normal for every fibroid.
Fibroids commonly grow during the reproductive years when estrogen and progesterone are active. However, their growth can be unpredictable. Some may remain stable for months or years, while others change more quickly.
It is also important to understand that doctors may measure fibroid growth by volume, not just diameter. A small increase in diameter can represent a much larger increase in overall volume because a fibroid is three-dimensional.
Fibroids can also grow in spurts. A fibroid may change quickly during one period and then remain stable for months or years.
What Causes Fibroids to Grow?
The exact reason some fibroids grow faster than others is not fully understood. Hormones, age, genetics, and individual biology can all play a role.
Factors that may influence fibroid growth include:
- Hormone levels: Estrogen and progesterone can affect fibroid growth. Hormonal changes during pregnancy, perimenopause, and menopause may also affect fibroid size and symptoms.
- Age and life stage: Fibroids commonly develop and grow during the reproductive years and often shrink after menopause as hormone levels decline.
- Fibroid size: Smaller fibroids can show larger percentage changes over time.
- Number of fibroids: If you have multiple fibroids, they may not all behave the same way. One may grow while another remains stable or shrinks.
- Individual biology: Genetic and other biological factors can influence how fibroids develop and behave.
Location matters, too. A small fibroid growing into the uterine cavity may cause significant heavy bleeding, while a larger fibroid on the outside of the uterus may cause pelvic pressure, bloating, or frequent urination.
What Is Considered a Fast-Growing Fibroid?
There is no universal medical definition of a “fast-growing” fibroid. Your healthcare provider may look more closely at a growing fibroid if you have new or worsening symptoms, unusual imaging findings, bleeding after menopause, or a mass that does not have the typical appearance of a fibroid.
If you know you have fibroids, contact your healthcare provider if you experience:
- Heavier or longer periods than usual
- Bleeding between periods or after menopause
- Increasing pelvic pressure, pain, or swelling
- Frequent urination or difficulty emptying your bladder
- Lower back pain or pain during sex
- Fatigue, dizziness, or shortness of breath related to heavy bleeding
Does Fast Fibroid Growth Mean Cancer?
Usually, no. Uterine fibroids are noncancerous growths, and rapid growth does not automatically mean that a fibroid is cancerous.
Uterine sarcoma is rare, but unusual changes should still be evaluated. Your provider may recommend additional imaging or testing if a mass has an atypical appearance, grows after menopause, or is associated with symptoms that need further investigation.
The important thing is not to assume that growth means cancer. Instead, your provider can evaluate the change in the context of your age, symptoms, imaging, and overall health.
How Do Doctors Monitor Fibroid Growth?
Fibroid monitoring often involves tracking both fibroid size and symptoms.
An ultrasound can help identify the number, size, and location of fibroids. In some cases, an MRI may be recommended to provide more detailed images, particularly when the diagnosis is unclear or treatment is being considered.
If your fibroids are being monitored, it can help to:
- Establish a baseline: Know the size, number, and location of your fibroids.
- Track symptoms: Keep note of changes in bleeding, pain, pressure, urinary symptoms, or fatigue.
- Follow recommended imaging: Your provider can determine when follow-up imaging is appropriate.
- Discuss your treatment goals: Let your provider know if preserving fertility or your uterus is important to you.
- Ask when treatment may be needed: Understanding what changes would lead to treatment can make monitoring less stressful.
Remember, fibroid size alone does not determine whether treatment is necessary. A smaller fibroid causing severe bleeding may need treatment, while a larger fibroid that causes no symptoms may simply be monitored.
What Are the Treatment Options for Fibroids?
Not every fibroid needs treatment. If your fibroids are stable and not causing significant symptoms, your provider may recommend monitoring them.
If symptoms are affecting your quality of life, treatment options may include:
- Medication: Certain medications can help manage heavy bleeding and other symptoms.
- Myomectomy: A procedure that removes fibroids while preserving the uterus.
- Uterine fibroid embolization (UFE): A minimally invasive procedure that reduces blood flow to fibroids, causing them to shrink over time.
- Radiofrequency ablation: A minimally invasive treatment that uses heat to destroy fibroid tissue so the fibroid can shrink.
- Hysterectomy: Surgery to remove the uterus, providing a permanent treatment for uterine fibroids.
The right approach depends on your symptoms, fibroid size and location, age, fertility plans, and personal treatment goals.
Frequently Asked Questions
Fibroids can grow at very different rates. Some grow slowly, some grow in spurts, and others remain stable or shrink. There is no single growth rate that applies to every person or every fibroid.
Yes. Fibroids may shrink naturally, particularly during and after menopause when estrogen and progesterone levels decrease. Some smaller fibroids may also shrink or become difficult to detect over time.
A growing fibroid does not automatically mean cancer. However, significant growth, new or worsening symptoms, unusual imaging findings, or growth after menopause should be discussed with a healthcare provider.
Explore Your Fibroid Treatment Options
If fibroids are causing heavy bleeding, pelvic pressure, pain, or other symptoms, you do not have to simply live with them. United Fibroid & Vascular Centers offers minimally invasive treatment options designed to help patients find relief while considering their individual health and treatment goals.
Ready to learn more about your options? Schedule a consultation with United Fibroid & Vascular Centers today.