Understanding Your Breast Imaging Report

Breast imaging reports are often written using technical medical terminology intended for physicians. Reading your own report can feel overwhelming, especially when unfamiliar words or findings are mentioned.

This guide explains the common sections of a breast imaging report and what they usually mean in plain language.

Typical Breast Imaging Report Structure

Why Breast Imaging Reports Can Feel Concerning

Radiologists are trained to carefully document even subtle findings. As a result, reports may sound more alarming than the actual level of concern.

Many findings mentioned in breast imaging reports are common and benign.

Examples include:

• Cysts
• Fibrocystic change
• Benign calcifications
• Stable asymmetries
• Fibroadenomas

The wording of the report does not automatically mean cancer is present.

Clinical History

This section explains why the breast imaging study was performed.

Examples may include:

• Screening mammogram
• Breast lump
• Breast pain
• Abnormal prior imaging
• Follow-up of a probably benign finding
• History of breast cancer

This information helps the radiologist focus on the clinical question being evaluated.

Technique

The Technique section explains how the breast imaging exam was performed.

This may include:

• 2D or 3D mammography (tomosynthesis)
• Targeted breast ultrasound
• Breast MRI with contrast
• Additional mammogram views

These technical details are mainly written for physicians and radiologists.

Breast Density

Most mammogram reports include a breast density category.

Dense breast tissue is common and normal, but it can make small abnormalities harder to see on mammography.

Breast density is usually categorized as:

• Almost entirely fatty
• Scattered fibroglandular density
• Heterogeneously dense
• Extremely dense

Having dense breasts does not mean you have cancer.

Findings

The Findings section describes what the radiologist sees on the images.

This section may describe:

• Masses
• Calcifications
• Asymmetries
• Architectural distortion
• Cysts
• Lymph nodes

The report may also describe characteristics such as shape, margins, or stability compared with prior imaging.

Many findings are ultimately benign, even when additional imaging is recommended.

Comparison With Prior Exams

Breast imaging is often compared with previous mammograms, ultrasounds, or MRIs.

Comparison helps determine whether a finding is:

• Stable
• New
• Slowly changing
• Clearly benign over time

Prior imaging can be extremely important in determining whether a finding is concerning.

Impression and BI-RADS Category

This is the most important part of the breast imaging report.

The Impression summarizes the key findings and overall assessment.

Most breast imaging reports also include a BI-RADS category.

Common BI-RADS categories include:

• BI-RADS 1: Negative
• BI-RADS 2: Benign findings
• BI-RADS 3: Probably benign - short interval follow-up recommended
• BI-RADS 4: Suspicious abnormality - biopsy may be recommended
• BI-RADS 5: Highly suggestive of malignancy

The BI-RADS category helps guide the recommended next steps.

Recommendations

Depending on the findings, the radiologist may recommend:

• Routine screening mammography
• Short-term follow-up imaging
• Additional mammogram views
• Targeted ultrasound
• Breast MRI
• Biopsy

Additional imaging does not automatically mean cancer is present. Many callbacks and follow-up studies ultimately prove benign.

Important Things to Remember

• Breast imaging reports are written primarily for medical providers
• Many breast findings are common and benign
• Technical wording can sound more concerning than the actual level of risk
• The Impression and BI-RADS category are usually the most important parts of the report
• Your physician interprets the imaging findings together with your history and symptoms

Understanding Your Report With More Clarity

Many patients feel anxious when reading breast imaging reports online before speaking with their physician.

Understanding the structure of the report and the meaning of common breast imaging terms can help reduce confusion and provide more clarity during an already stressful time.