Types of Uterine Fibroids Explained: Intramural, Submucosal, Subserosal & Pedunculated

types of fibroid

Understanding the Different Types of Fibroids and What They Mean for You

If you have been diagnosed with uterine fibroids, one of the first questions you may have is: what type do I have? The types of fibroids vary based on their location within or around the uterus, and understanding these differences is essential because each type can cause distinct symptoms and may respond differently to treatment. At Mark Medical Care – Fibroids, we believe that informed patients make the best decisions about their health. That is why we want to help you understand exactly what you are dealing with and what your options are moving forward.

Uterine fibroids are non-cancerous growths that develop in or on the uterus. While they are extremely common—affecting up to 80% of women by age 50—not all fibroids are the same. Their size, number, and especially their location determine the severity of symptoms and the most appropriate treatment approach. Whether you are experiencing heavy menstrual bleeding, pelvic pain, or pressure on your bladder, knowing which type of fibroid you have is the first step toward relief.

types of fibroid

The Four Main Types of Fibroids

Medical professionals classify fibroids into four primary categories based on where they grow in relation to the uterine wall. Each type has unique characteristics and potential impacts on your daily life.

Intramural fibroids are the most common type. These fibroids grow within the muscular wall of the uterus itself. They can range from very small to quite large, and as they expand, they cause the uterus to enlarge. Women with intramural fibroids often experience heavy menstrual bleeding, prolonged periods, pelvic pain, and a feeling of fullness or pressure in the lower abdomen. Large intramural fibroids can also press against the bladder, leading to frequent urination, or against the rectum, causing constipation or back pain.

Submucosal fibroids develop just beneath the inner lining of the uterus and protrude into the uterine cavity. Though they are less common than intramural fibroids, submucosal fibroids tend to cause the most severe symptoms relative to their size. Even small submucosal fibroids can lead to extremely heavy menstrual bleeding, prolonged periods, passing of large blood clots, and severe cramping. They are also more likely to interfere with fertility and can increase the risk of miscarriage or complications during pregnancy. Women with submucosal fibroids often describe their periods as debilitating and life-disrupting.

Subserosal fibroids grow on the outer wall of the uterus and extend outward into the pelvic cavity. Because they do not distort the uterine cavity, subserosal fibroids typically do not cause heavy bleeding. However, as they grow larger, they can press against nearby organs. This may result in pelvic pain, back pain, bloating, or a noticeable increase in abdominal size. Women sometimes describe feeling like they look pregnant or cannot fit into their clothing comfortably. Large subserosal fibroids can also cause digestive issues or urinary frequency depending on which organs they press against.

Pedunculated fibroids are a subtype that can be either submucosal or subserosal. What distinguishes them is that they grow on a stalk, called a pedicle, that attaches them to the uterus. Pedunculated fibroids can sometimes twist on their stalk, a condition known as torsion, which causes sudden and severe pelvic pain. This is considered a medical emergency and requires immediate attention. Depending on whether they grow inward or outward, pedunculated fibroids can cause symptoms similar to submucosal or subserosal types.

How Fibroid Location Affects Your Symptoms

The location of your fibroids plays a significant role in determining what symptoms you experience and how severe they are. Understanding this connection helps you make sense of what your body has been telling you.

Fibroids that grow into the uterine cavity, such as submucosal types, are most likely to cause heavy menstrual bleeding and fertility issues. The uterine lining becomes distorted, leading to irregular shedding and excessive blood loss during menstruation. Many women with these fibroids experience anemia due to chronic blood loss, which can cause fatigue, weakness, dizziness, and shortness of breath.

Fibroids located within the uterine wall or on the outer surface, such as intramural and subserosal types, are more likely to cause bulk symptoms. These include pelvic pressure, frequent urination, difficulty emptying the bladder completely, constipation, and lower back pain. As these fibroids grow, they take up space in the pelvic cavity and press against surrounding structures.

The size and number of fibroids also matter. A single large fibroid can cause more noticeable symptoms than several small ones, but multiple fibroids of any size can collectively create significant discomfort and disruption to your quality of life.

Why Accurate Diagnosis Matters

Knowing which types of fibroids you have is not just about understanding medical terminology. It directly impacts your treatment options and outcomes. Not all fibroids require the same approach, and some treatments work better for certain types than others.

For example, submucosal fibroids that protrude into the uterine cavity may sometimes be removed through hysteroscopic myomectomy, a procedure performed through the vagina without any incisions. However, intramural and subserosal fibroids often require different approaches. Traditional surgical options like myomectomy or hysterectomy have been the standard for years, but they come with significant drawbacks including long recovery times, surgical risks, and in the case of hysterectomy, permanent loss of the uterus.

At Mark Medical Care – Fibroids, we specialize in a minimally invasive alternative called Uterine Fibroid Embolization (UFE). This FDA-approved procedure treats all types of fibroids by blocking the blood supply to the growths, causing them to shrink naturally over time. UFE preserves the uterus, requires no surgery, involves no hospitalization, and allows most women to return to normal activities within one to two weeks. It is an option that many gynecologists do not offer, which is why seeking specialized care makes such a difference.

Getting the Right Diagnosis

Diagnosing fibroids and determining their type requires imaging studies. An ultrasound is often the first step and can identify the presence, size, and location of fibroids. However, an MRI provides the most detailed information and is particularly useful for surgical or procedural planning. An MRI can show exactly how many fibroids are present, their precise locations, and their relationship to surrounding structures.

During your consultation, your doctor will also review your symptoms, medical history, and any previous treatments you have tried. This comprehensive evaluation helps determine not only what type of fibroids you have but also which treatment approach is most likely to give you relief while aligning with your personal goals, whether that includes preserving fertility, avoiding surgery, or simply getting back to your normal life as quickly as possible.

If you have been told you need a hysterectomy or that surgery is your only option, it is worth seeking a second opinion from a fibroid specialist. Many women are not aware that less invasive options exist, and understanding all of your choices empowers you to make the decision that is right for you.

Your Treatment Options Beyond Surgery

Once you know which type of fibroids you have, you can explore treatment options tailored to your specific situation. For women who want to avoid major surgery, UFE offers a proven alternative that treats fibroids regardless of their location or type.

UFE is performed by an interventional radiologist who uses imaging guidance to thread a small catheter through a blood vessel in the groin or wrist. Tiny particles are then injected into the arteries that supply blood to the fibroids. This blocks the blood flow, causing the fibroids to shrink over time. Because it is minimally invasive, UFE involves only a small puncture site, no general anesthesia, and a recovery period measured in days rather than weeks or months.

Women who undergo UFE typically experience significant improvement in their symptoms within a few weeks to a few months. Heavy bleeding decreases, pelvic pain and pressure are relieved, and bulk symptoms caused by large fibroids gradually resolve as the growths shrink. Most importantly, the uterus is preserved, which is a priority for many women whether or not they plan to have children in the future.

Faqs About Types of fibroid

Can I have more than one type of fibroid at the same time?

Yes, it is very common for women to have multiple fibroids of different types. For example, you may have both intramural and subserosal fibroids simultaneously. This is why a thorough evaluation with imaging is so important—it gives your doctor a complete picture of what is happening inside your body.

Do certain types of fibroids grow faster than others?

Fibroid growth rates vary from person to person and are influenced by factors such as hormones, age, and genetics. However, the type of fibroid does not necessarily determine how fast it will grow. Regular monitoring with your healthcare provider helps track any changes and determine when treatment may be needed.

Which type of fibroid is most likely to cause fertility problems?

Submucosal fibroids, which grow into the uterine cavity, are the most likely to interfere with fertility and pregnancy. They can prevent a fertilized egg from implanting properly or increase the risk of miscarriage. However, large intramural fibroids that distort the uterine cavity can also affect fertility. If you are trying to conceive, discussing your fibroid type with a specialist is essential.

Conclusion

Understanding the different types of fibroids is an important step toward taking control of your health and finding relief from symptoms that may have been affecting your life for far too long. Whether you have intramural, submucosal, subserosal, or pedunculated fibroids, you deserve to know all of your options—not just the surgical ones.

At Mark Medical Care – Fibroids, we are dedicated to providing women across New York with access to advanced, minimally invasive fibroid treatment that preserves the uterus and prioritizes rapid recovery. If you are ready to explore your options and get your diagnosis, we are here to help. You do not have to live with fibroid symptoms, and you do not have to settle for surgery if it is not what you want. Take the first step today.

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