Can Fibroids Be Missed on an Ultrasound?

Uterine fibroids are very common, non-cancerous growths in the uterus that can vary in size and number. At American Fibroid Centers, our diagnosing process involves imaging techniques, with ultrasounds being one of our primary methods. Many patients who suspect they have a fibroid might wonder if fibroids can be missed on an ultrasound. 

In this blog, we’ll dive into whether fibroids can be missed on an ultrasound and what that means for you. We’ll also share insights into how American Fibroid Centers approach diagnosing and managing uterine fibroids to ensure you get the most accurate and effective care possible.

Will Uterine Fibroids Show Up on Ultrasound?

Ultrasounds are commonly used to detect uterine fibroids because they are non-invasive and effective. By using sound waves to create an image of the uterus, ultrasounds allow our skilled interventional radiologists to see the size, shape, and number of fibroids. In most cases, standard pelvic ultrasounds can detect the majority of fibroids. However, our affiliated physicians may use other diagnostic techniques, such as MRIs, in more severe cases where fibroids aren’t visible.

Can Fibroids Be Missed on an Ultrasound?

The short answer is yes, fibroids can be missed during an ultrasound. There are several reasons for this, including:

• Size and Location: Small fibroids or those located in certain areas of the uterus may be harder to detect. Very small fibroids might not show up clearly on ultrasound images.
• Type of Ultrasound Used: Different ultrasound scans have varying sensitivity levels. For example, transabdominal ultrasounds (performed through the abdomen) might not detect smaller or less accessible fibroids as effectively as transvaginal ultrasounds (performed through the vagina).
• Ultrasound Equipment and Technique: The quality of the ultrasound equipment and the technician’s skill can also impact the detection of fibroids. High-resolution machines and experienced operators are more likely to spot smaller fibroids.

Is an MRI or Ultrasound Better for Fibroids?

Both MRIs and ultrasounds can be used to detect fibroids, offering their unique advantages, including:

Ultrasound

The first imaging method, ultrasounds, is typically cost-effective and readily available. These ultrasounds provide a good initial assessment of fibroids’ size and location. However, they do not give doctors a clear-cut picture of what exactly is causing the issue. 

MRI

Compared to ultrasounds, MRI offers more detailed and clearer imaging of fibroids. MRIs are particularly useful for doctors to evaluate the exact size, location, and type of fibroid. If ultrasound results are inconclusive and more detail is needed, an MRI scan is likely necessary.

What are the Types of Ultrasound Scans to Diagnose Fibroids?

What to Expect During an Ultrasound for Fibroids?

During an ultrasound for fibroids, you can expect the following:

• Preparation: You may need a full bladder to improve image quality for a transabdominal ultrasound. For a transvaginal ultrasound, you may be asked to empty your bladder before the procedure.
• Procedure: The technician will apply a gel to your abdomen for a transabdominal ultrasound or insert a probe into your vagina for a transvaginal ultrasound. The scan is typically painless, though some discomfort may occur, especially with the transvaginal approach.
• Duration: The procedure usually takes about 15-30 minutes, depending on the complexity of the case and the type of ultrasound being performed.

How Long Does a Fibroid Ultrasound Take?

A typical ultrasound for fibroids takes between 15 and 30 minutes. The exact duration can vary based on factors such as the type of ultrasound used, the number of fibroids, and the need for additional imaging.

Ultrasound for Fibroids at the American Fibroid Centers

While ultrasounds are a fundamental tool in detecting fibroids, it’s important to remember that they might not always catch every fibroid, particularly if they are very small or hidden. If you’re concerned about fibroids or have questions about your ultrasound results, we highly recommend scheduling an appointment with American Fibroid Centers. Our team of experts is dedicated to providing you with the best care and treatment options available to ensure your health and well-being. Don’t let unanswered questions about fibroids weigh you down. Schedule an appointment today to take the first step towards your health journey.