Breast ultrasound

A usually not painful scan that uses sound waves (no radiation) to look more closely at a breast lump or an area of concern, often alongside a mammogram or examination.

✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review

In short

It uses sound waves, not radiation, and is a usually not painful way to look more closely at a lump or area of concern.
It is good at telling a fluid-filled cyst from a solid lump, but it cannot on its own prove a lump is harmless — that may need a needle sample (biopsy).
It is often done with an examination and, over about 40, a mammogram, and results are frequently discussed the same day in a breast clinic.
A normal scan is reassuring but not a guarantee — any new or changing breast change should still be checked by a clinician.

A plain-English summary. The detail — including risks and recovery — is below.

At a glance

TypeImaging test (ultrasound)

AnaestheticNot needed (local anaesthetic only if a biopsy is taken at the same visit)

How long it takesAbout 10–20 minutes

Hospital stayOutpatient, no hospital stay

Time off workUsually none

When you'll see resultsOften discussed on the day in a breast clinic; a formal report follows, and any biopsy result takes longer

On the NHS?Widely available on the NHS when clinically needed, usually as part of a breast clinic assessment

A general guide. Your radiologist will give you advice for your situation.

Best fit

Gives a close, real-time look at a lump or area of concern without any radiation.

Pause if

Ultrasound alone is not enough to screen the whole breast — it is not a substitute for mammographic screening in the screening age range.

Main recovery point

You can wipe off the gel, dress and go home or back to work straight away. There are no restrictions if you only had a scan.

Good aftercare

A clear named route to get your result and to ask questions.

Straight after the scan

You can wipe off the gel, dress and go home or back to work straight away. There are no restrictions if you only...

If you had a biopsy

Keep the small dressing dry for a day or so, expect possible bruising and mild soreness, and take simple pain...

Same day (one-stop clinic)

In a breast clinic the doctor may discuss the scan findings with you before you leave, though any biopsy result is...

Within about 1–2 weeks

A formal scan report goes to the clinician who referred you, and any biopsy result is usually available, often at...

Medical line illustration of breast imaging and biopsy sampling pathway for Breast ultrasound. — Illustration only - not a diagnosis, medical advice or a promise of result. Your anatomy and treatment plan may differ. Vuemedics does not publish before-and-after photos.

What is a breast ultrasound?

A breast ultrasound is a scan that uses high-frequency sound waves, not X-rays or radiation, to build a live picture of the inside of the breast on a screen. A radiologist or specialist breast radiographer (sonographer) moves a small hand-held probe over the skin to look at a lump or an area that needs a closer look.

One of the most useful things an ultrasound can do is show whether a lump is solid or is a fluid-filled cyst, and how its edges look. It is especially helpful in younger women and in anyone with dense breast tissue, where a mammogram (breast X-ray) can be harder to read. It can also look at the lymph nodes in the armpit.

Ultrasound is usually one part of the picture, not the whole answer. In a breast clinic it is often combined with an examination and, for women over about 40, a mammogram — and a needle sample (biopsy) if anything needs checking. This combination is sometimes called triple assessment.

A scan can be very reassuring, but no single test is perfect. A normal ultrasound does not completely rule out a problem, which is why a new or changing breast symptom should always be assessed properly rather than watched at home.

Types, options & approaches

There may be different ways to do this. The right approach depends on the clinical question and your circumstances.

Diagnostic breast ultrasound

A targeted scan of a lump, area of pain, nipple change or an abnormality seen on a mammogram, to see what it is and whether it needs a sample.

Ultrasound of the armpit (axilla)

Looks at the lymph nodes in the armpit, often when a breast cancer is suspected or being assessed, to check whether nodes look normal.

Supplemental ultrasound with a mammogram

Used to add information in women with dense breasts, where a mammogram alone can miss things. It can find extra changes but also picks up harmless ones.

Ultrasound-guided biopsy or aspiration

The scan is used to guide a fine needle or core needle precisely into a lump to take a sample, or to drain a painful cyst, usually under local anaesthetic.

Breast ultrasound vs mammogram

Point	Ultrasound	Mammogram
Uses radiation?	No	Yes (low dose X-ray)
Best for	Lumps, younger or dense breasts, guiding biopsy	Screening and overall breast tissue, calcium specks
Solid vs fluid lump	Shows this well	Less able to tell
Often used together?	Yes, they complement each other	Yes, they complement each other

These tests answer different questions, so a breast clinic often uses both rather than choosing one. Your clinician will advise what you need.

Preparing for your scan

You usually need no special preparation — eat and drink normally and take your usual medicines.
Wear a two-piece outfit so you can undress to the waist easily; you will be given a gown or covering.
Avoid talcum powder, body lotion or spray on the breast and armpit on the day, as these can interfere with the scan.
Bring any previous breast scans, mammograms or letters, and details of any breast surgery or implants.
Tell the team if you are or might be pregnant or breastfeeding — ultrasound is safe, but it helps them interpret the scan.
Mention any blood-thinning medicines, in case a needle sample (biopsy) is taken at the same visit.
Allow extra time in case a biopsy or further imaging is recommended after the scan.

What happens

You lie on a couch, usually with your arm raised above your head. The radiologist or sonographer puts warm gel on the breast and moves a small hand-held probe over the skin, sometimes pressing gently to see the tissue from different angles. You may feel mild pressure but it should not hurt.

The scan itself usually takes about 10 to 20 minutes. The person doing it watches the live images on a screen and saves pictures of anything important. They will often look at the armpit too.

If something needs a closer look, they may recommend a needle sample (biopsy) there and then, using the ultrasound to guide the needle after numbing the skin with local anaesthetic. In a one-stop breast clinic, your examination, scan and any biopsy may all happen at the same appointment, and the doctor may talk through the scan findings with you before you leave.

Is this scan right for me?

A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.

May not be suitable if…

Ultrasound alone is not enough to screen the whole breast — it is not a substitute for mammographic screening in the screening age range.
It is not the right test on its own for assessing tiny calcium specks (microcalcification), which a mammogram shows better.
It cannot, by itself, prove a solid lump is harmless — that usually needs a needle sample (biopsy).
Deep or very dense areas, or breasts with implants, can be hard to see fully on ultrasound and may need other imaging.

Delay or rearrange if…

There is broken skin, infection or an open wound over the area to be scanned and a biopsy is planned.
You are on blood-thinning medicine that has not been reviewed and a biopsy may be needed.
Previous relevant images or biopsy results are missing and would change what is done.
A new red, hot, painful breast suggests possible infection or inflammatory change that needs urgent clinical review first.

Alternatives to discuss

Clinical breast examination by a specialist as part of triple assessment.
Mammogram, usually in women over about 40 or to assess calcium specks.
Breast MRI in selected situations, such as implants, high risk or further problem-solving.
Watchful waiting with planned review for a change that is very likely harmless, agreed with your clinician.

Before you decide

Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.

What matters most to me?

Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.

What are all my options?

Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.

What would make me pause?

Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.

What happens if I do nothing today?

For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.

Benefits

Gives a close, real-time look at a lump or area of concern without any radiation.
Reliably tells a simple fluid-filled cyst from a solid lump, which often reassures.
Works well in younger women and dense breasts, where mammograms are harder to read.
Can guide a needle accurately to take a sample or drain a cyst.
Can be repeated safely, including in pregnancy and breastfeeding.
Helps the breast team plan what, if anything, needs to happen next.

Risks & complications

More common

Mild pressure or cold gel during the scan
Finding a harmless change (such as a cyst or fibroadenoma) that then needs explaining or monitoring
Needing further tests, such as a mammogram or biopsy, to be sure

Less common

A normal-looking scan that does not fully rule out a problem (a missed or 'false negative' finding)
A suspicious-looking area that turns out to be harmless after a biopsy (a 'false positive'), causing worry
Bruising, discomfort or a small bleed if a biopsy or cyst drainage is done

Rare but serious

Infection at a biopsy site
An area that is hard to see well, for example because of position, implants or very dense tissue, needing another type of scan

The main limitation is that ultrasound depends a lot on the skill of the person doing it and on what is being looked at. It is excellent for some questions and weaker for others, which is why it is usually combined with examination and, where appropriate, a mammogram and a needle sample. Ask whether your symptom has been fully assessed and what the plan is if the scan looks normal but your symptom continues.

Published figures to discuss

Ultrasound performance depends heavily on the operator, the equipment and what is being assessed, so a single accuracy figure is misleading. False positives (a harmless area that looks suspicious) and false negatives (a cancer that is not seen) both occur, which is why ultrasound is combined with examination, mammography and biopsy rather than used alone. Reliable patient-facing numbers for these rates vary widely by setting and are not quoted here.

Figure	Reported range	How to interpret it	Source / confidence
Radiation exposure	None	Ultrasound uses sound waves, not ionising radiation.	Guide sourcesClinical context
Benign lump being found	Common, especially cysts and fibroadenomas	Ultrasound helps distinguish solid from fluid-filled lumps but may still require biopsy if features are uncertain.	Guide sourcesClinical context
Cancer missed on ultrasound	Possible, especially with small, subtle or mammographically detected calcification-only disease	Breast ultrasound often complements mammography rather than replacing it.	Guide sourcesClinical context
Need for image-guided biopsy after ultrasound	A minority of scans	Biopsy is recommended when imaging features are suspicious or do not match the clinical examination.	Guide sourcesClinical context

These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.

What happens afterwards

There is no physical recovery from the scan itself. 'Afterwards' is mainly about getting your results and knowing what happens next; if you had a biopsy, you may have a little bruising for a few days.

Straight after the scan

You can wipe off the gel, dress and go home or back to work straight away. There are no restrictions if you only had a scan.

If you had a biopsy

Keep the small dressing dry for a day or so, expect possible bruising and mild soreness, and take simple pain relief such as paracetamol if needed.

Same day (one-stop clinic)

In a breast clinic the doctor may discuss the scan findings with you before you leave, though any biopsy result is not ready yet.

Within about 1–2 weeks

A formal scan report goes to the clinician who referred you, and any biopsy result is usually available, often at a follow-up appointment.

What's normal — and not a worry

No after-effects at all if you only had a scan
A little bruising or tenderness for a few days after a biopsy or cyst drainage
Some natural anxiety while waiting for results
Being asked back for another test if the picture is not yet clear

Aftercare

If you only had a scan, there is nothing special to do afterwards.
After a biopsy, keep the dressing dry as advised and avoid heavy lifting or vigorous exercise for a day or two.
Use a well-fitting bra for comfort if your breast feels tender after a biopsy.
Take simple pain relief such as paracetamol if you are sore; avoid aspirin unless told otherwise.
Make sure you know how and when you will get your results, and who to contact if you do not.
Keep any follow-up appointment, even if you feel reassured.
Continue to check your breasts and report any new or changing symptom, whatever the scan showed.

Before your scan

Two-piece outfit for easy changing
No talc, lotion or spray on the breast and armpit on the day
Previous scans, mammograms or clinic letters to bring
List of medicines, including blood thinners
Someone to come with you if you are anxious about results
A note of how and when results will be given

⚠ Get urgent help if…

Spreading redness, warmth, swelling or pus at a biopsy site (possible infection)
Bleeding from a biopsy site that does not stop with gentle pressure
A high temperature or feeling generally unwell after a biopsy
A breast lump or change that is getting bigger or changing while you wait for results
New skin dimpling, nipple change or bloodstained nipple discharge
Severe or worsening breast pain that is not settling

Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.

General guidance — it doesn't replace the specific advice your radiologist gives you.

Results & realistic expectations

A normal or reassuring ultrasound usually means the area looked at is a simple cyst or normal tissue, and often no further action is needed. If a lump looks solid or has worrying features, a needle sample (biopsy) is usually recommended, because the scan alone cannot prove what a solid lump is.

It is important to understand what an ultrasound cannot do. It does not look at the whole breast in the way a mammogram does, it can miss some cancers, and it can also flag harmless changes. A normal scan is not a promise that nothing is wrong, so any breast symptom that continues or changes should be reviewed even after a normal result.

How long it lasts

An ultrasound is a snapshot in time. A reassuring scan today does not cover future changes, so it does not replace being breast aware or attending NHS breast screening if you are in the screening age range. If a harmless-looking lump is being watched, your clinician may suggest a repeat scan after a few months to confirm it is stable.

Related tests, treatments or support

Breast ultrasound is often combined with a clinical examination and, in women over about 40, a mammogram, and with a needle sample if anything needs checking. In someone with a suspected cancer it may be combined with an ultrasound of the armpit and sometimes an MRI scan. Your breast team decides the right combination for your situation.

Follow-up & long-term care

How you get your results depends on the setting. In a one-stop breast clinic the doctor may talk through the scan on the day, with any biopsy result given at a follow-up visit, usually within a week or two. If the scan was arranged on its own, the report goes to the clinician who referred you, who will then contact you. Make sure you know who is responsible for giving you the result.

Repeat, follow-on and what comes next

It is common to be asked back for further imaging or a biopsy after an ultrasound — this is normal, not a sign something is being missed.
Harmless-looking lumps are sometimes rescanned after a few months to confirm they are stable.
An inconclusive or technically difficult scan may need repeating or a different test.

Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.

What good aftercare looks like

A clear named route to get your result and to ask questions.
A written or clearly explained plan if a biopsy is needed and how that result will be given.
A safety-net message to come back if a symptom continues, even after a normal scan.
Onward referral into a breast clinic if anything suspicious is found.

What affects the cost

Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:

Whether the scan is a single test or part of a full breast clinic assessment with examination and mammogram
Whether a needle sample (biopsy) or cyst drainage is done at the same visit
The seniority of the radiologist doing and reporting the scan
Whether a same-day report and consultation are included
Laboratory fees if a biopsy sample is analysed
Any follow-up appointment to discuss results

Make sure your written quote includes

The scan fee and who performs and reports it
Whether examination and a mammogram are included if needed
The cost of any biopsy and the laboratory analysis
Local anaesthetic and consumables for a biopsy
A follow-up appointment to discuss results
What happens, and what it costs, if further imaging is recommended
How and when results are provided

On the NHS? Breast ultrasound is widely available on the NHS when clinically needed, usually as part of a breast clinic; some people choose private imaging for speed or convenience.

You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.

Choosing a specialist safely

Check the radiologist is on the GMC Specialist Register for this area.
Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
You're entitled to time to consider and to have your questions answered before you agree — the radiologist who looks after you should explain it, not a salesperson.
Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
You're entitled to your total cost in writing — including any follow-up — before you decide.

How Vuemedics verifies every consultant →

Questions to ask your medical professional

Take this to your consultation. A good radiologist will welcome every one of these.

What exactly are you scanning, and does it explain my symptom?
Is this lump a cyst or solid, and does it need a needle sample (biopsy)?
Do I also need a mammogram or any other test to be sure?
What happens if the scan looks normal but my symptom continues?
Who will give me my results, and when?
If a biopsy is taken, when and how will I get that result?
Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
Will you be the radiologist who carries out my scan, and who looks after me afterwards?
What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
What does a realistic result look like — and what can this scan not achieve?
What are my options, including waiting, doing nothing for now, or choosing a different approach?
Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
What is the total cost in writing, including any follow-ups, and how much time do I have to decide?

Frequently asked questions

Does a breast ultrasound use radiation?

No. It uses sound waves, so there is no X-ray or radiation. That is one reason it is used in younger women, in pregnancy and when repeated scans are needed.

Does it hurt?

The scan itself is usually not painful, though the probe may press a little and the gel can feel cold. If a needle sample (biopsy) is taken, the skin is numbed with local anaesthetic first.

Is ultrasound or a mammogram better?

Neither is simply 'better' — they answer different questions. Ultrasound is good for lumps and dense breasts; a mammogram looks at the whole breast and tiny calcium specks. They are often used together.

If my scan is normal, am I in the clear?

A normal scan is reassuring but not a guarantee. Ultrasound can miss some changes, so any new or continuing breast symptom should still be checked, and you should keep attending screening if you are invited.

Can I have a breast ultrasound on the NHS?

Yes. It is widely available on the NHS when clinically needed, usually through a breast clinic after referral by your GP. People sometimes choose private imaging for speed or convenience.

Will I get my results straight away?

Often the doctor in a breast clinic can talk through the scan findings on the day. A formal report and any biopsy result follow afterwards, usually within a week or two.

Should I just wait and watch a lump instead of being scanned?

No. A new breast lump should be assessed rather than watched at home. Most lumps are not cancer, but the only way to be sure is proper assessment, which may include a scan.

Find a verified radiologist for breast ultrasound

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How we made this page

Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →

Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.

Sources & standards: NHS — Breast cancer in women: diagnosis Cancer Research UK — Breast ultrasound Breast Cancer Now — Tests after a breast symptom RCR — Standards for the provision of an ultrasound service RCR — Recommendations for specialists practising ultrasound independently

Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.

Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.