What is a Breast Ultrasound Scan (Unilateral)?

A Breast Ultrasound Scan is a non-invasive imaging test that uses high-frequency sound waves to produce real-time images of breast tissue. It does not use radiation and is considered very safe.

A unilateral breast ultrasound focuses on one breast only, making it ideal when symptoms or findings are localised to a single side. The scan assesses breast tissue, ducts and surrounding structures to identify cysts, solid masses, inflammation or fluid collections.

Breast ultrasound is commonly used as a first-line investigation, particularly in younger patients or alongside mammography for targeted assessment.

Why do I need a Breast Ultrasound Scan?

A unilateral breast ultrasound scan is recommended when symptoms, physical findings or clinical concerns affect one breast. It helps determine the nature of changes and whether further tests are required.

You may need a breast ultrasound scan if you notice:

• A lump in one breast
• Localised breast pain or tenderness
• Swelling or thickening in one area
• Changes in breast texture
• A palpable area found on examination
• Redness or signs of inflammation
• Nipple discharge from one side
• Follow-up of a previously detected finding
• Further assessment after mammography
• Reassurance for new or persistent symptoms

Early assessment helps provide reassurance and guides appropriate next steps.

Benefits of a Breast Ultrasound Scan

• Targeted assessment of one breast
  Focuses precisely on the area of concern.
• No radiation exposure
  Safe for repeated imaging and younger patients.
• Real-time imaging
  Allows immediate evaluation during the scan.
• Differentiates cysts and solid masses
  Helps identify benign versus suspicious findings.
• Comfortable and non-invasive
  No compression or needles required.
• Fast diagnosis
  Often performed and explained on the same day.
• Complements mammography
  Adds detail where mammograms are inconclusive.
• Provides reassurance
  Quickly rules out serious causes in many cases.

Step-by-Step – How We Offer Breast Ultrasound Scans

Clinic-Based Breast Ultrasound Scan (UK-wide)

• Choose your nearest UK clinic
• Attend your scheduled appointment
• The scan typically takes 15–30 minutes
• Performed by an experienced clinician
• Findings are explained during or shortly after the scan

Important:
Breast ultrasound scans are performed in clinic only. Home visits are not available. Services are available across the UK.

Your Breast Ultrasound Results Explained

Breast ultrasound results are interpreted based on tissue appearance and structure, not numerical values.

Normal Results

What this means:

• Normal breast tissue appearance
• No cysts, masses or abnormal fluid

What it suggests:
Symptoms may be hormonal or benign in nature.

Mild to Moderate Abnormal Findings

What this may show:

• Simple or complex cysts
• Benign solid masses (such as fibroadenomas)
• Localised inflammation

What it suggests:
Often managed with monitoring or follow-up imaging.

Significant or Concerning Findings

What this may show:

• Solid masses with irregular features
• Suspicious tissue changes
• Abnormal vascular patterns

What it suggests:
Further tests such as biopsy, mammography or specialist referral may be recommended.