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After the biopsy

Bruising and Swelling After a Biopsy — What Is Normal?

You may have come home with a small dressing and found, by the next morning, a dark bruise spreading well beyond it. That is alarming to see, and it is also one of the most common things that happens after a biopsy.

Medically reviewed by Dr. T. Raghavender Reddy, Medical Oncologist, MBBS · DM (Medical Oncology) · MD (Radiation Oncology) · Last reviewed September 2026

  • Bruising is expected — Almost every biopsy causes some bruising. How much varies between people and between biopsy types.
  • It looks worst on day two or three — The bruise deepens over the first 48 hours before it starts to fade — not because anything is wrong.
  • Most bruises are gone within two weeks — The colour change from purple to green to yellow is the bruise breaking down, not getting worse.
  • A growing lump is the sign to call — A swelling that grows after 48 hours, or pain that gets worse rather than better, needs to be reported.
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Some bruising and swelling at the biopsy site is expected and does not mean something went wrong. The colour usually deepens over the first two days before it starts to fade. Most bruising settles within one to two weeks, depending on where the biopsy was done and how easily you bruise in general.

What happens to the bruise over the first two weeks?

  1. First 24 hours

    The area around the biopsy site swells and feels tender. A bruise may appear at the puncture point and spread a little beyond it as blood settles under the skin.

  2. Days 2 to 3

    The bruise reaches its darkest colour — often deep purple, blue or nearly black. This looks alarming but does not mean bleeding is still happening.

  3. Days 4 to 7

    The colour begins to shift toward green and yellow as the bruise breaks down. Tenderness usually reduces around this time.

  4. Week 2 onward

    Most bruising has faded. Some tenderness at deeper biopsy sites may persist a little longer, but the visible bruise should be gone or nearly gone.

What can I do to help it settle?

  • Keep the dressing on for as long as your team advised — removing it early can expose the wound before it has sealed.
  • Rest the area and avoid heavy lifting or strenuous activity until your team says it is safe.
  • If your team said a cold pack is appropriate, use it wrapped in cloth — never on bare skin — for brief periods in the first 24 hours.
  • Keep the site dry until the wound has fully closed.
  • Sleep with the biopsy area slightly elevated if you can, to help limit swelling.
  • If you were given a pressure pad, maintain gentle pressure on the site as instructed.

How much bruising is normal?

Bruising that spreads several centimetres beyond the puncture point is common, especially if the needle passed through muscle or fatty tissue. Some people bruise very little; others bruise widely. Neither is a sign that something went wrong.

The size of the bruise depends on the type of biopsy, where on the body it was done, and how easily you bruise in general. A bruise that feels firm underneath is usually blood that has pooled and begun to clot — uncomfortable but rarely dangerous.

If you take blood-thinning medicines or have a condition that affects clotting, remind your team if the bruising seems heavier than you expected.

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When does bruising become a haematoma — and when do you call?

A haematoma is a collection of blood that has pooled under the skin rather than dispersing. You may notice a swelling that grows rather than shrinks over the first 24 hours, or pain that gets worse rather than better.

Call your team the same day if the swelling is visibly growing, the area becomes very firm or tight, or the pain worsens after 48 hours rather than easing.

Go to the emergency department now if there is bleeding through the dressing that does not slow when you press firmly for ten minutes, if you feel faint or light-headed, or if the skin over a swelling looks stretched and shiny.

Questions people ask about biopsy bruising

The bruise is spreading — is that dangerous?

Some spreading in the first 48 hours is normal and expected. Blood pools along tissue planes under the skin, so a bruise taken on Monday can look much larger by Tuesday morning. What matters is whether it continues to grow after 48 to 72 hours. A bruise still visibly spreading on day three or four, or where the skin above looks stretched and tight, should be reported to your team the same day.

I can feel a firm lump under the bruise

A firm lump under a bruise is usually a haematoma — a localised collection of blood that has clotted. Small haematomas are common after biopsies and typically reabsorb on their own over several weeks, feeling hard at first and softening gradually. A lump that is growing, very painful, or making the overlying skin look tight and shiny needs to be reported to your team rather than waited out.

My team did not warn me it would look like this

It is common to leave a biopsy clinic with only a small dressing and no preparation for how bruising can look 24 to 48 hours later. A large bruise appearing overnight feels frightening. If you are worried, a phone call to your team is always the right step. They can tell you whether what you are seeing is expected or whether it needs a review. You never need to wait until your next appointment to ask.

I take herbal supplements — could they be making it worse?

Some herbal supplements and household remedies can affect how easily blood clots, which may make bruising more extensive than it would otherwise be. Tell your treating team what you are taking — including herbal preparations and home remedies — before your biopsy if possible, and certainly if you are bruising heavily afterward. This is information your team needs to give you safe care, not a judgement on what you are taking.

Can I apply anything to help the bruise heal faster?

Keep to whatever your biopsy team advised for wound care. Do not apply any cream, oil or home remedy directly over a wound that has not fully closed — the skin at a recent biopsy site is not intact, and introducing anything risks infection. Once the wound has healed over completely, ask your team whether any topical preparation is appropriate for residual bruising or discolouration.

Did you know?

A post-biopsy haematoma that is not growing typically reabsorbs on its own over several weeks without any additional procedure. Standard post-procedural guidance prioritises observation and gentle pressure over invasive management for small, stable collections. Reporting early — while the haematoma is still small — is what keeps that the appropriate response.

Source: ESMO Clinical Practice Guidelines — Supportive Care in Cancer

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Common questions

Frequently asked questions

Will the bruise leave a permanent mark on my skin?

Most bruises from biopsies fade completely within two to three weeks and leave no lasting mark. In some cases, especially after deeper biopsies or in people who bruise easily, a faint tint can persist for a few weeks longer before resolving. Permanent skin changes from bruising alone are rare. If the colour has not changed at all after three weeks, mention it to your team at your next appointment.

Can I take something for the soreness?

Ask your team before taking any pain relief. Some over-the-counter medicines can affect blood clotting and make bruising worse. Your team can tell you which options are safe for you in the days after a biopsy. If the pain is severe or getting worse after 48 hours rather than easing, that is a reason to call your team — not just manage it at home.

My biopsy was in one place but the bruise appeared somewhere else — is that normal?

Yes. Bruising can track along tissue planes under the skin and appear at some distance from the actual biopsy site. This is how blood moves through subcutaneous tissue rather than a sign of a new problem. If the bruising is very extensive, still spreading after 48 hours, or comes with increasing pain or swelling, call your team to describe what you are seeing.

When should I call rather than waiting for my next appointment?

Call the same day if the swelling is visibly growing, the bruise is becoming more painful after 48 hours rather than easing, or you feel unwell alongside the local symptoms. Go directly to an emergency department if there is bleeding through the dressing that does not slow with firm pressure for ten minutes, or if you feel faint or light-headed.

The area feels warm — could it be infected?

Some warmth over a bruise is normal in the first few days as part of the healing response. Signs of infection are different: spreading redness beyond the bruise, a wound that is oozing or smelling, fever, or warmth that gets worse after two to three days rather than settling. If any of those are present, call your team the same day.

Full index

Browse all 701 biopsy topics

Every page in this section, grouped by the part of the journey it belongs to. Pick a group to see what is in it.

What Is a Biopsy?

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Types of Biopsy Compared

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Preparing for a Biopsy

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Recovery and Aftercare

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Biopsy by Body Part

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Understanding Your Report

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IHC and Molecular Markers

IHC and Molecular Markers on a Biopsy: What They Mean →

Grading and Scoring Systems

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How Accurate Is a Biopsy?

How Accurate Is a Biopsy? Errors and Second Opinions →

If Your Result Is Benign

Your Biopsy Is Benign: What It Means and What Comes Next →

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