Screening vs. Diagnostic Mammogram: What’s the Difference?

October is Breast Cancer Awareness Month, a time when many women are reminded to think about breast health and mammography. But one question often comes up when scheduling an exam: Do I need a screening mammogram or a diagnostic mammogram?

Although both use mammography to create images of breast tissue, they are performed for different reasons. Understanding that difference can make the process less confusing and help you know what to expect when your healthcare provider recommends breast imaging.

At CMS Diagnostic Services in Miami, Digital Mammography is available for both routine breast cancer screening and the evaluation of specific breast concerns.

“The American Cancer Society estimates that breast cancer will account for approximately 1 in 3 new cancers diagnosed in women in the United States in 2026, reinforcing the importance of appropriate screening and early detection.«

The U.S. Preventive Services Task Force currently recommends mammography every two years for women ages 40 through 74 who are at average risk for breast cancer. Other medical organizations use somewhat different screening intervals, so individual recommendations can vary.

This matters because mammography isn’t only an exam for women who have noticed something unusual. Screening is specifically intended to look for breast cancer before symptoms are present.

What Is a Screening Mammogram?

A screening mammogram is performed when you don’t have breast symptoms or a known breast concern. Its purpose is to look for changes that may not be noticeable through touch or other symptoms.

Regular screening can help detect breast cancer at an earlier stage. Your appropriate screening schedule depends on factors including your age and individual risk, and different medical organizations have slightly different recommendations. Your healthcare provider can help determine the schedule that’s right for you.

When Is a Diagnostic Mammogram Used?

A diagnostic mammogram is different because it’s performed to investigate a specific concern or finding, rather than as routine screening. Your healthcare provider may recommend diagnostic breast imaging in situations such as:

• A new breast lump or noticeable change
• Unusual nipple changes or discharge
• An abnormality identified on a previous mammogram
• An area that requires additional or more detailed breast images

Needing a diagnostic mammogram does not automatically mean breast cancer is present. It means additional imaging is needed to better evaluate a particular area or concern.