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After your biopsy

Caring for a Bone Marrow or — Deep Biopsy Site

Being sent home after a bone marrow biopsy can feel abrupt. The site is deep, the ache is different from a surface wound, and it is not always clear what is normal. This page tells you what to expect and what to watch for.

Medically reviewed by Dr. Bharati Devi Gorantla, Medical Oncologist, MBBS · MD · DM (Adyar, Chennai) · ECMO · MRCP SCE (UK) · Last reviewed September 2026

  • Deep aching is expected — The needle reaches bone, so the soreness feels different from a skin wound. This is normal.
  • Bruising may spread at first — Blood under the skin can move along tissue before it is reabsorbed. It does not mean anything has gone wrong.
  • Keep the dressing dry — Follow your team's instructions on when you can wet the area. If you were not told, call and ask.
  • Escalation signs are specific — Fever, spreading redness, and bleeding that does not stop with pressure are the signs that need a same-day call.
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Bone marrow biopsy sites go deeper than a skin cut, so a dull ache and bruising around the area are expected. Keep the dressing clean and dry, ease back into activity gradually, and call your team if bleeding soaks through the dressing, the site becomes increasingly hot or red, or you develop a fever.

Why does a bone marrow biopsy site feel different from a skin wound?

The needle for a bone marrow biopsy passes through skin and muscle to reach the surface of the bone, and sometimes into the bone itself. That depth is why the soreness feels like a dull, deep ache rather than a sharp surface sting.

Bruising around the site is common. Blood that collects in the tissue can spread under the skin, so the discoloured area may look larger than the biopsy site itself. Yellow or green edges as it fades are a normal part of healing.

The ache typically eases over the days following the procedure. It may feel most noticeable when you first stand up, sit down, or press on the area. If the pain is clearly not settling, or is getting worse rather than better, tell your team.

How do I look after the dressing at home?

  1. Keep the dressing dry and in place

    Do not let water touch the dressing when you shower. Your team will tell you when it is safe to wet the area. If you were not given instructions, call and ask before your next shower.

  2. Check it without removing it

    Look at the dressing once or twice a day. A small amount of dried spotting is normal in the first day. If fresh bleeding soaks through, press firmly with a clean cloth for several minutes and call your team.

  3. Change it only when advised

    Follow the specific instructions your team gave you for when and how to change the dressing. If none were given, call before removing it rather than making a guess.

  4. Keep the skin clean once it comes off

    When your team says the dressing can come off, keep the site clean and dry until it has fully closed. Let your team know if the area looks open, persistently wet, or increasingly red.

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How long will the soreness last and what should you avoid?

The deep aching at the biopsy site eases gradually over several days for most people. The first day or two can feel more uncomfortable as the local anaesthetic wears off and the tissue is at its most inflamed.

Avoid heavy lifting, strenuous exercise, and any activity that puts direct pressure on the site until the soreness has clearly settled. Walking normally is generally fine. Your team can tell you when it is safe to return to your usual routine.

If movement or normal activity feels significantly more painful than when you left the clinic, let your team know that day rather than waiting for your next appointment.

What people worry about after getting home

There is a hard lump or area of swelling near the site.

A small, firm lump or swelling around a deep biopsy site is usually a normal part of healing. Blood or fluid can collect in the tissue around the site before the body reabsorbs it, and this tends to reduce on its own over days to weeks. What warrants a same-day call is a lump that is growing rapidly, becoming very painful, or appearing alongside a fever — those signs together are worth assessing promptly rather than waiting.

The pain feels worse than yesterday, not better.

Some people notice the pain increases on the day or two after the procedure before it begins to settle — that pattern is common and does not always mean something has gone wrong. What your team wants to know about is pain that is clearly getting worse beyond the first couple of days, pain severe enough that rest does not ease it at all, or pain that comes alongside a new symptom like fever or spreading redness at the site. Any of those is a reason to call the same day rather than waiting for your next appointment.

I am not sure if the site looks infected.

Signs of infection at a wound site include redness that is spreading outward beyond the site, skin that feels warm and increasingly firm, swelling that is getting bigger rather than smaller, and any discharge that is cloudy or has an unusual smell. These are different from bruising, which tends to be purple or yellow and does not spread rapidly outward. If you are unsure, call your team and describe what you see — or send a photograph through whatever contact channel the clinic has given you.

Is it safe to take a painkiller for the ache?

Many people take a simple painkiller for the first few days and find it helps. However, not every painkiller is appropriate for someone on cancer treatment — some affect how platelets work or may interact with other medicines you are already taking. Ask your team or pharmacist which one is safe for your specific situation before choosing one from a pharmacy shelf. If you were given a painkiller at the clinic or in your discharge notes, follow those instructions.

What signs mean I need help today?

Call your team today if bleeding soaks through the dressing and does not stop after several minutes of firm pressure, if the site is becoming increasingly swollen, hot, and red, or if you develop a fever. Go to the emergency department if the pain at the site becomes sudden and severe, if you cannot move normally because of it, or if you feel generally unwell alongside any of these signs. These escalation thresholds apply whether you are one day or one week out from the procedure.

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Common questions

Frequently asked questions

How long does the soreness from a bone marrow biopsy usually last?

For most people the deep aching eases over several days. The first day or two can feel more uncomfortable as the local anaesthetic wears off and the tissue is at its most inflamed, but it generally improves steadily after that rather than staying constant. If your pain is not settling after several days, or is clearly getting worse, that is worth telling your team — not because it is necessarily serious, but because they can advise whether it is within the normal range for you.

When can I shower or bathe after a bone marrow biopsy?

Keep the dressing dry until your team says otherwise. Your discharge instructions should say when you can wet the area. If you were not given a clear answer, call before you shower — it is a quick question, and water reaching a wound site before it has closed raises the risk of infection. Most teams will give you a specific timeframe or tell you to wait until after the dressing has been checked at a follow-up.

The bruising is spreading — should I be worried?

Spreading bruising in the first couple of days is common. Blood that collects under the skin moves along tissue planes, which can make the bruised area look much larger than the biopsy site itself. Yellow or green edges as the bruise fades are also a normal part of healing. What is not normal is bruising growing rapidly alongside increasing swelling, warmth, and pain that is getting worse — that combination together is worth a same-day call to your team.

Can I sleep on the side where the biopsy was done?

Many people find it uncomfortable to sleep directly on the biopsy side for the first few nights because pressure on the site increases the ache. If you can manage it comfortably, there is no clinical reason to avoid it. A small pillow behind the lower back or between your knees when lying on your side can take pressure off the area. Your team can advise if you have a specific concern, but this is generally a matter of comfort rather than a clinical restriction.

When can I go back to work after a bone marrow biopsy?

Many people return to desk work or light activity within a day or two. Work involving heavy lifting, repeated bending, or sustained physical effort usually needs a longer rest, and how long depends on how the site heals for you personally. Your treating team knows both the procedure and your situation, so they are the best people to give you a specific answer. If you were given a sick certificate with a return date, follow that guidance unless your symptoms are significantly better or worse than expected.

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?

What Is a Biopsy? Everything You Need to Know →

Types of Biopsy Compared

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Preparing for a Biopsy

What to Expect on the Day of Your Biopsy →

Recovery and Aftercare

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Biopsy by Body Part

Biopsy by Body Part: What to Expect at Each Site →

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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