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If you've noticed swelling, a soft lump, or fluid buildup after your mastectomy or breast reconstruction surgery, you may be wondering what's happening beneath the surface. In many cases, this is a seroma — one of the most common and least alarming parts of the healing process.
Understanding what a seroma is, why it happens, and when to reach out to your care team can help you feel more confident and less worried as your body recovers. Here's everything you need to know.
What Is A Seroma?
A seroma is a pocket of yellow-clear fluid (called serum) that collects under the surface of your skin following a trauma or surgery. This fluid is similar to the fluid that circulates in your bloodstream, known as plasma.
What causes a seroma?
Anytime tissues are traumatized, the body responds by saturating the affected area with serum as part of the inflammatory response. A great example of this is a fluid-filled blister. Inflammation recruits healthy white blood cells that aid the immune response and help fight infection. This protective reaction is what causes a seroma.
What Are The Seroma Symptoms?
Seromas typically appear several days after surgery, but they can also appear several weeks later after surgical drains have been removed. The first sign of a seroma is a lump or bulge under the skin near the surgery site. The lump may be tender to the touch, but often is not painful. In larger seromas, fluid may drain from the incision site.
Seroma vs. Hematoma: What Is the Difference?
It's easy to confuse a seroma with a hematoma, since both can cause swelling beneath the skin after surgery. A seroma is a pocket of clear or pale-yellow fluid called serum, a normal part of your body's healing response. A hematoma, on the other hand, is a collection of blood that forms when small vessels bleed near the surgical site.
Timing and color often tell them apart. Hematomas usually appear within a day or two after surgery, with fluid that's red or dark. Seromas tend to appear days or weeks later, with clear or light yellow fluid.
Hematomas typically require more urgent care, whereas seromas are more common and resolve over time. If you notice new swelling or fluid buildup, contact your surgeon.
Who Can Have a Seroma?
A seroma is a common concern after breast reconstruction surgery, but it can also form after a range of surgical procedures. Understanding seromas and their causes can help ease any worries. While anyone undergoing surgery can develop a seroma, women who have had tissue removal or areas of trauma are at a slightly higher risk.
Seromas can occur after:
- A mastectomy
- A lumpectomy
- A lymph node removal
Seromas can also be a possible complication of:
- Hernia repair surgery
- Liposuction
- Abdominoplasty
Can You Reduce the Risk of a Seroma?
While seromas can't be completely prevented — they're a natural part of your body's healing process — there are ways to help lower the risk. Surgical drains, placed during your procedure, help remove excess fluid before it can build up, making them among the most effective tools available. Compression garments worn during recovery can also help by applying gentle, even pressure to the surgical area.
How Are Seromas Treated?
Small seromas tend to heal on their own, as the body reabsorbs the fluid once the inflammation has ceased, and do not require medical treatment. On the other hand, large seromas typically require a minimally invasive treatment to drain the fluid. This procedure often involves the following steps:
- During an in-office procedure, the doctor inserts a needle into the seroma site and suctions the fluid out using a syringe. This may need to be performed more than once.
- Re-insertion of a surgical drain, which is typically done with the help of our radiology colleagues
- Additional surgery may be indicated if a seroma recurs or if it becomes infected
When to See a Doctor
While seromas are generally harmless and often resolve on their own, it’s important to reach out to your doctor if you experience any of the following:
- Increased swelling or discomfort around the surgical area
- Redness or signs of infection near the seroma
- Persistent or growing fluid buildup that doesn’t seem to drain on its own
- Fever or unusual changes in your health
If you’re uncertain or concerned about any changes during your recovery, don’t hesitate to contact your healthcare provider.
Don’t Let Seromas Delay Your Recovery – Schedule a Consultation Today
If you’re dealing with a seroma or have concerns about your recovery, it’s important to address it early to prevent any delays in healing. Our expert team at PRMA is here to provide the support and guidance you need to stay on track with your recovery.
Reach out today to schedule a consultation, and let’s work together to ensure a smooth, healthy recovery every step of the way.