Fibroids vs Polyps: Are Uterine Polyps and Fibroids the Same Thing?

Fibroids vs. Polyps: What Do These Mean for You?

If you have fibroids or polyps, it means there are non-cancerous growths in or around your uterus that may be responsible for symptoms like unusual bleeding, pelvic discomfort or fertility concerns.

Although both conditions can cause similar symptoms and are common in women of reproductive age, they are different. This difference matters because it affects the type of treatment you may need and how the condition is managed.

Understanding whether you have fibroids or polyps helps determine the next steps in your care.

What Are Uterine Fibroids?

Uterine fibroids are non-cancerous growths that develop from the muscle layer of the uterine wall. Also called leiomyomas, they can be small or large and may occur as a single growth or in multiples.

Their location in the uterus largely determines the symptoms they cause:

In practice, fibroids are driven by estrogen and progesterone. They tend to grow during the reproductive years and usually shrink after menopause. They are common, affecting an estimated 4.5% to 68.6% of women at some point in their lives.

What Are Uterine Polyps?

Uterine polyps are growths that develop from the inner lining of the uterus (endometrium). They are usually soft, small and may occur alone or in groups.

Most polyps are harmless, though in some cases, especially after menopause, they can contain precancerous or cancerous cells.

They are most common in women approaching or going through perimenopause, typically in their 40s.

What Are the Symptoms of Uterine Fibroids?

Many women with fibroids have no symptoms. Around 50% experience few or none, with fibroids often found during a routine scan or pelvic exam. When symptoms do occur, they may include:

• Heavy Menstrual Bleeding: Periods may be heavier, last longer than seven days or involve passing large clots.
• Pelvic Pain and Pressure: A dull heaviness or feeling of fullness in the lower abdomen, often worse during periods.
• Frequent Urination: Pressure on the bladder can increase the urge to urinate or create a feeling of incomplete emptying.
• Lower Back and Leg Pain: Larger fibroids can press on nearby nerves, causing persistent pain in the lower back, hips or legs.
• Constipation and Bloating: Fibroids near the bowel can make bowel movements difficult and cause ongoing bloating.
• Painful Intercourse: Pain during or after sex, especially if fibroids are near the cervix or lower uterus.
• Fatigue and Anaemia: Heavy bleeding can lead to low iron levels, causing tiredness, breathlessness or light-headedness.
• Irregular Periods: Cycles may become unpredictable, with changes in flow or unexpected spotting.

What Are the Symptoms of Uterine Polyps?

Uterine polyps tend to produce more localised symptoms, which often center around changes to menstrual bleeding. Common symptoms include:

• Irregular Menstrual Bleeding: Your periods may become unpredictable in timing, length or flow. Cycles that were previously regular can start to feel inconsistent or difficult to track.
• Spotting Between Periods: Light bleeding outside your expected cycle is a clear sign. This includes spotting at random points during the month or bleeding after sexual intercourse.
• Heavy Menstrual Bleeding: Some women notice their periods becoming heavier than their usual baseline. Clots may be present, though bleeding is generally less severe than what fibroids typically cause.
• Postmenopausal Bleeding: Any vaginal bleeding after 12 consecutive months without a period should always be investigated promptly. In postmenopausal women, polyps are a common cause, but endometrial changes need to be ruled out.
• Difficulty Conceiving: Polyps inside the uterine cavity can interfere with implantation or contribute to repeated early miscarriage. This is often how polyps come to light in women undergoing fertility investigations.

Because these symptoms overlap with fibroids, imaging or hysteroscopy is needed to confirm the diagnosis.

What Causes Fibroids and Polyps?

Fibroids and polyps are caused by hormone-driven tissue overgrowth, but their underlying causes differ.

Fibroids develop due to a combination of hormonal stimulation, genetic changes in uterine muscle cells and local growth factors. Estrogen and progesterone drive their growth, which is why they often shrink after menopause. Risk is higher in women over 35, those with a family history and Black women. Hypertension and obesity also contribute.

Polyps are primarily driven by estrogen. Elevated estrogen levels can cause the uterine lining to thicken, leading to polyp formation. Risk increases with conditions such as PCOS, obesity and the use of tamoxifen. Perimenopause, postmenopause and hypertension are also associated factors.

Also Read: What Is Endometriosis?

Can Fibroids and Polyps Occur at the Same Time?

Yes, fibroids and polyps can occur simultaneously.

Both are hormone-driven and often develop during the same stage of life, so having both is not unusual. This may explain symptoms that do not fully match a single diagnosis or that do not improve with treatment for a single condition.

Diagnosis typically involves a pelvic ultrasound and hysteroscopy to identify and assess each condition separately.

How Are Fibroids and Polyps Diagnosed?

Fibroids and polyps are diagnosed based on symptoms, a pelvic examination and imaging tests. Common investigations include:

• A pelvic ultrasound is the standard first step. It can reliably detect fibroids and larger polyps, though smaller polyps are sometimes missed on ultrasound alone.
• Saline infusion sonography (SIS) is a more detailed ultrasound technique in which saline is gently introduced into the uterine cavity to improve visualisation. It is particularly useful for identifying smaller polyps that a standard scan may miss.
• Hysteroscopy involves passing a thin camera into the uterus, giving your doctor a direct view of the cavity. It is the most reliable way to confirm a polyp diagnosis, and where needed, the polyp can be removed during the same procedure.
• An MRI scan provides a detailed picture of fibroid size, number and position within the uterus. Most useful when surgery is being considered and your doctor needs a precise map of what is there.
• An endometrial biopsy involves taking a small sample of uterine tissue for examination. This is typically recommended for postmenopausal women with polyps to rule out endometrial cancer.

Also Read: Why Do Uterine Fibroids Occur?

How Are Uterine Fibroids Treated?

Uterine fibroids are treated based on symptoms, size and location, and whether you plan to conceive.

Options include:

• Watchful Waiting: Suitable if fibroids are small and not causing significant symptoms, especially near menopause, when they may shrink.
• Hormonal Therapies: Combined pills, progestogen-only pills or a levonorgestrel IUD help control heavy bleeding without removing fibroids.
• GnRH Agonists: Temporarily lower estrogen to shrink fibroids, usually before surgery.
• Tranexamic Acid and NSAIDs: Help reduce bleeding and pain without affecting hormones.
• Uterine Artery Embolisation (UAE): Blocks blood supply to fibroids, causing them to shrink.
• Radiofrequency Ablation: Uses targeted energy to destroy fibroid tissue while preserving the uterus.
• MRI-Guided Focused Ultrasound: A non-invasive method to break down fibroid tissue.
• Myomectomy: Surgically removes fibroids while preserving the uterus; preferred if you plan to conceive.
• Hysterectomy: Removes the uterus; considered for severe symptoms when fertility is not a priority and is the only definitive solution.

How Are Uterine Polyps Treated?

Treatment for polyps and fibroids depends on your symptoms, age and fertility plans. If you are still in your reproductive years and the polyp is not causing symptoms, your doctor may monitor it rather than treat it straight away.

Options include:

• Watchful waiting is appropriate for small, asymptomatic polyps in premenopausal women. Your doctor will advise whether monitoring is suitable based on your individual situation.
• Hormonal medication such as progestins or GnRH (Gonadotropin-Releasing Hormone) agonists can help manage irregular or heavy bleeding. They do not remove the polyp itself, and symptoms may return once medication is stopped.
• Hysteroscopic polypectomy is the standard treatment when removal is needed. A thin camera is passed into the uterus, allowing your doctor to view and remove the polyp in the same procedure. It is minimally invasive, requires no external incisions and recovery is typically short. The removed tissue is sent to a laboratory for analysis to detect abnormal or cancerous cells. 
• Hysterectomy may be recommended if the removed tissue contains cancerous cells, depending on the findings and your overall health.

In postmenopausal women, polyps are usually removed even without symptoms due to the risk of malignancy.

Conclusion

Uterine fibroids and polyps are different conditions, even though they can cause similar symptoms. Knowing which one you have matters because it directly affects how it is managed and what to expect going forward.

If you are dealing with ongoing symptoms like unusual bleeding, pelvic discomfort or difficulty conceiving, getting a clear diagnosis is the most important step. An ultrasound and, in many cases, a hysteroscopy can confirm the cause of your symptoms.

Once you have that clarity, you and your doctor can decide on the right approach; whether that means monitoring, medication or a procedure, based on what works best for your health and plans.