In this guide12 sections
- What is a Breast Haematoma?
- Breast Haematoma vs Bruise vs Seroma: What’s the Difference?
- What Causes a Breast Haematoma?
- Who Is at Risk of Developing a Breast Haematoma?
- What Are the Symptoms of a Breast Haematoma?
- How Long Does a Breast Haematoma Last?
- Is a Breast Haematoma Dangerous?
- How Is a Breast Haematoma Diagnosed?
- How Is a Breast Haematoma Treated?
- What Precautions Can I Take to Avoid a Haematoma After Breast Surgery?
- Frequently Asked Questions
- Treatment of Breast Haematoma at Centre for Surgery
What is a Breast Haematoma?
A breast haematoma (also spelled “hematoma”) is a type of complication that can occur after breast surgery, particularly after breast augmentation or breast reduction surgery. It happens when a blood vessel ruptures, and blood accumulates inside the breast tissue rather than being reabsorbed normally. This can cause the breast to appear swollen, painful, and tender to the touch.
Breast haematoma after surgery is not rare — published research puts the incidence at roughly 2–10% of cosmetic breast procedures, though the majority of these are minor and resolve with observation or a single aspiration rather than further surgery. It happens more often in procedures involving larger incisions or more extensive tissue dissection. Factors that can increase the risk of developing a breast haematoma include excessive bleeding during surgery, the use of blood-thinning medications, and high blood pressure.
If left untreated, a large breast haematoma can lead to infection, tissue damage, and — in rare cases — necrosis. It is essential to seek medical attention promptly if you experience symptoms of a breast haematoma after breast surgery.
The treatment for a breast haematoma typically involves draining the accumulated blood, either with a needle (aspiration) or, for larger collections, through a small incision. In some cases, a small haematoma may resolve on its own without any intervention as your body naturally reabsorbs the blood. Pain management and close monitoring are essential parts of the treatment process either way.
Preventing a breast haematoma involves following your surgeon’s postoperative instructions precisely. This includes avoiding strenuous activities, taking any prescribed medications as directed, and wearing proper supportive garments. Attending all follow-up appointments with your surgeon is crucial to ensure that any potential complications are detected and treated early.
Breast Haematoma vs Bruise vs Seroma: What’s the Difference?
These three post-surgical findings get confused with each other regularly, but they’re genuinely different, and telling them apart matters for how urgently you should be seen:
- Bruise: minor bleeding from small capillaries just under the skin. Produces flat discolouration — red, purple, then yellow-green as it fades — without a distinct lump. Resolves on its own within one to two weeks.
- Haematoma: a genuine collection of pooled blood within the tissue, large enough to form a firm, often tender, palpable lump. Unlike a simple bruise, it has volume and mass, and can continue to enlarge if bleeding is ongoing.
- Seroma: a collection of clear or straw-coloured fluid (not blood) that gathers in the space left by surgery. It typically feels softer and more mobile than a haematoma and doesn’t cause the same purple-red discolouration.
If in doubt, don’t try to self-diagnose which of the three you’re looking at — contact your surgical team. All three can look similar in the first few days after surgery, and a proper assessment (sometimes with ultrasound) is the only reliable way to tell them apart.
What Causes a Breast Haematoma?
Some form of trauma or injury to blood vessels within the breast usually causes a haematoma. During breast surgery, such as breast augmentation or breast reduction, trauma to the blood vessels can lead to a haematoma. The use of blood thinners or clotting disorders can also cause haematomas to form. Additionally, physical trauma, such as a fall or impact, can cause a haematoma to form in the breast tissue outside of a surgical context. Overall, any condition or event that damages blood vessels in the breast tissue can lead to a haematoma.
Who Is at Risk of Developing a Breast Haematoma?
All patients undergoing breast surgery carry some risk of developing a breast haematoma. However, certain factors can increase this risk, including:
- Large breasts
- Extensive surgical procedures
- High blood pressure
- Obesity
- Smoking
- Use of blood-thinning medications
- Previous history of bleeding disorders or haematomas
- Poor surgical technique or improper postoperative care
It is essential to discuss your full medical history and any risk factors with your surgeon before undergoing breast surgery to minimise the risk of complications such as breast haematoma.
Haematoma is one of several possible complications, and our guide to breast implant safety covers the other risks of breast augmentation.
What Are the Symptoms of a Breast Haematoma?
A breast haematoma is a collection of blood within breast tissue following surgery, injury, or trauma. Symptoms can vary depending on the size and location, but commonly include:
Swelling and tightness
The accumulation of blood within the tissue leads to an increase in volume, causing the breast to appear enlarged and feel tight. This swelling can extend to surrounding areas, including the chest wall and armpit.
Pain or tenderness
The pain may be constant or worsen with movement or pressure, and its severity generally correlates with the size of the haematoma.
Bruising and discolouration
Visible bruising results from blood seeping into the surrounding tissues, ranging from red to purple, changing colour as the haematoma resolves.
Lump or mass formation
A palpable lump — the clotted blood collected in the tissue — can be distinguished from surrounding breast tissue by its firmer, sometimes spongy texture.
Numbness or tingling
A breast haematoma can cause numbness or tingling in the breast or nipple as pressure affects local nerve function.
Warmth and redness
The affected area may feel warmer to the touch and appear more red compared to the surrounding breast tissue or the unaffected side.
Restricted arm movement
In some cases, a larger haematoma can make it uncomfortable or painful to move the arm on the affected side.
Fever
In rare cases, a breast haematoma can cause a fever, which may be a sign of infection and warrants urgent medical attention.
If you experience any of these symptoms after breast surgery or trauma to the breast, contact your surgical team promptly. Early detection and treatment of a breast haematoma helps prevent complications and supports the best possible outcome.
How Long Does a Breast Haematoma Last?
This depends entirely on size. Small haematomas are often reabsorbed by the body naturally within a few days to a couple of weeks, following the same process as a large bruise resolving. Larger haematomas that require aspiration or surgical evacuation typically resolve more quickly once drained, though full settling of the surrounding tissue and any residual bruising can take several weeks. Your surgeon will give you a realistic timeline specific to your case at review.
Is a Breast Haematoma Dangerous?
A breast haematoma can become a genuine concern if it is left untreated or leads to further complications such as infection or tissue damage. A large haematoma can put pressure on surrounding tissue and blood vessels, interfering with blood flow. There is also a recognised association between haematoma formation and an increased risk of capsular contracture in patients with breast implants, as the presence of blood around the implant can contribute to abnormal scar tissue formation. This is one of several reasons early detection and treatment genuinely matters, rather than being purely about comfort.
How Is a Breast Haematoma Diagnosed?
A breast haematoma is usually diagnosed through a combination of physical examination and, where needed, imaging. A physical examination alone can identify most breast haematomas without further diagnostic imaging.
During a physical examination, your surgeon will look for swelling, bruising, and tenderness, and will ask about your medical history, any recent surgery or injury, and any medications you’re taking.
Imaging studies such as ultrasound or MRI can confirm the presence and extent of a breast haematoma, helping determine its size, location, and whether surrounding tissue has been affected. In some cases, a fine needle aspiration may also serve a diagnostic purpose, collecting fluid for testing and ruling out other causes.
How Is a Breast Haematoma Treated?
Treatment depends on the haematoma’s size, location, and severity. The goal throughout is to relieve pain and discomfort, prevent infection, and reduce the risk of further complications.
Conservative Treatment (Small Haematomas)
Small, asymptomatic breast haematomas may resolve on their own without active intervention. You’ll be monitored closely for any signs of infection or enlargement. Rest, ice, and compression may be recommended to reduce pain and swelling, alongside pain medication if needed.
Aspiration (Moderate Haematomas)
For haematomas that are causing discomfort but don’t require full surgical drainage, your surgeon can use a needle — sometimes with ultrasound guidance for accuracy — to drain the accumulated blood and relieve pressure.
Surgical Evacuation (Large Haematomas)
Large breast haematomas, or those causing significant pain and discomfort, may require surgical evacuation — draining the accumulated blood through a small incision, and removing any damaged tissue. After implant surgery, the implant can typically be reinserted in the same procedure once the haematoma has been fully drained. A drainage tube may be placed afterward to remove any remaining excess fluid or blood.
What Precautions Can I Take to Avoid a Haematoma After Breast Surgery?
Follow your surgeon’s instructions
Follow all instructions given before and after your procedure, including avoiding certain medications, stopping smoking, and refraining from alcohol.
Avoid strenuous activity
For the first few weeks after breast surgery, avoid any activity that puts pressure on your chest or causes you to strain — this includes heavy lifting, strenuous exercise, and bending over.
Wear a compression garment
Your surgeon may recommend a compression garment or surgical bra after breast surgery to reduce swelling, promote healing, and lower your risk of developing a haematoma.
Manage pain and swelling
Follow your surgeon’s instructions for managing pain and swelling, including taking medication as directed or applying cold compresses.
Avoid blood thinners
Certain medications, supplements, and foods can thin your blood, increasing bleeding and haematoma risk. Avoid these as advised by your surgeon.
Keep the incision site clean
Proper hygiene helps prevent infection, which can itself increase the risk of haematoma formation.
Attend follow-up appointments
Regular follow-up appointments are essential for monitoring your healing progress and catching any complications, including haematoma formation, early.
Which breast procedure is right for you?
A few short questions, including a simple mirror test. You will get a suggested procedure, realistic recovery times, and an honest view of when an examination is needed first.
Frequently Asked Questions
What’s the difference between a haematoma and a bruise?
A bruise is minor bleeding from small capillaries that produces flat discolouration without a distinct lump. A haematoma is a larger, genuine collection of pooled blood that forms a firm, palpable mass and can cause significantly more pain and swelling than a simple bruise.
How common is a breast haematoma after breast augmentation?
Published research puts the overall incidence of haematoma across cosmetic breast surgery at roughly 2–10%, though most cases are minor. The exact risk for any individual patient depends on factors like the extent of surgery, medication use, and overall health.
Is a breast haematoma dangerous?
Small, promptly identified haematomas are generally not dangerous. Larger, untreated haematomas carry a genuine risk of infection, tissue damage, and — for implant patients — an increased risk of capsular contracture, which is why timely assessment matters.
Can a breast haematoma resolve without treatment?
Yes, small haematomas often resolve on their own as the body naturally reabsorbs the blood, in the same way a large bruise fades over one to a few weeks. Larger haematomas typically need aspiration or surgical drainage rather than being left to resolve alone.
Will treating a breast haematoma cost extra?
At Centre for Surgery, treatment of a breast haematoma arising from your procedure is included in the cost of your original treatment — you are not charged separately for this as part of your standard aftercare.
Treatment of Breast Haematoma at Centre for Surgery
Discovering a breast haematoma can be unsettling, especially after breast surgery or an injury. It’s essentially an indication of broken blood vessels, similar in nature to a bruise but larger — and the good news is that even without intervention, your body is generally very effective at managing the repair process. Even with proper surgical technique and safety measures, a breast haematoma can still occur, though it’s rare when performed by an experienced plastic surgeon.
At Centre for Surgery, breast surgery is performed by GMC-registered plastic surgeons, at our CQC-regulated Baker Street facility, rated Good overall, under TIVA (Total Intravenous Anaesthesia) as a day case. Our medical content is reviewed by Specialist Plastic Surgeon Dr Spyridon Vlachos (GMC 7522950).
If the haematoma is large and causing significant discomfort or interfering with healing, our experienced surgeons will assess its severity and determine the best course of action — whether observation, aspiration, or, in rare cases, surgical evacuation. Treatment of breast haematoma arising from your procedure is included in the cost of your treatment.
