Mammogram or Ultrasound: Which Breast Screening Do You Need?

When a breast screening appointment is on the calendar, one question often comes up first: mammogram or ultrasound? The two tests are frequently mentioned together, but they are not interchangeable. Knowing the difference can help you understand what your doctor recommends and why.

What Is a Mammogram?

A mammogram uses low dose X-rays to look for changes in the breast, including changes that may be too small to feel.

1. Best Suited For

• Breast cancer screening, particularly as women get older
• Detecting suspicious changes before symptoms appear
• Further assessment when recommended by your doctor

2. Recommended Age and Interval

For women at average risk, screening guidelines generally recommend a mammogram every two years between the ages of 50 and 74. For women aged 40 to 49, screening may be considered depending on individual breast cancer risk, after discussing the benefits and potential harms with your doctor.

3. What to Expect

Your breast is briefly compressed between two plates while X-ray images are taken.

What Is a Breast Ultrasound?

A breast ultrasound uses sound waves to create images of the inside of the breast, with no radiation involved.

1. Best Suited For

• Taking a closer look at a lump or suspicious area
• Assessing breast symptoms, especially in younger women
• Providing additional information alongside a mammogram when needed

2. Recommended Age and Interval

There is not a standard screening age for breast ultrasound. For women under 35 with breast symptoms, ultrasound is generally used as the initial imaging test. For symptomatic women 35 and above, mammography and ultrasound may be used together.

3. When It May Be Added to Mammography

• To assess a lump or suspicious area
• To investigate breast symptoms
• As additional imaging when a mammogram shows an abnormality

4. What to Expect

Gel is applied to the breast and a handheld probe is moved over the skin to create images.

Mammogram vs Ultrasound at a Glance

It Is Not Always Mammogram or Ultrasound

The two tests are not meant to compete with each other. They are meant to complement each other. Your doctor may recommend one test, or a combination of both, depending on your age, symptoms and individual risk factors. A mammogram remains the main tool for routine breast cancer screening, while an ultrasound is often brought in to take a closer look at something specific, such as a lump or an area flagged on a mammogram.

Choosing a test based only on what a friend or relative went through is not the same as having it assessed for your own situation. Age, breast density, family history and whether you have any symptoms all play a part in deciding which test, or combination of tests, is right for you.

Key Takeaway

The right breast screening test depends on your age, symptoms and personal risk, not on someone else's experience. A mammogram remains the main tool for routine screening, while an ultrasound helps doctors look more closely at a lump or an abnormal finding.

To find out which approach, mammogram, ultrasound or both, is appropriate for you, speak to a doctor at Sunway Medical Centre Penang. You can book a breast cancer screening or learn more about breast cancer symptoms, stages and treatment options at our Cancer Centre in Penang.

References

• American Cancer Society, Recommendations for the Early Detection of Breast Cancer (cancer.org)
• US Preventive Services Task Force, Breast Cancer: Screening (uspreventiveservicestaskforce.org)