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What could cause sudden arm swelling after bilateral mastectomy besides blood clots or lymphedema?

Sudden arm swelling after breast cancer surgery can be concerning, especially when blood clots and lymphedema have been ruled out. There are a few other possibilities to consider.

A seroma could be causing your swelling Show Full Answer

What could cause sudden arm swelling after bilateral mastectomy besides blood clots or lymphedema?

Sudden arm swelling after breast cancer surgery can be concerning, especially when blood clots and lymphedema have been ruled out. There are a few other possibilities to consider.

A seroma could be causing your swelling. This is a collection of clear fluid that can develop under the skin after surgery. While seromas typically appear within a week or two after an operation, they can sometimes form later or in areas near the surgical site, including the arm or armpit area.

You might also be experiencing fluid buildup related to inflammation or post-surgical changes in your tissue. After a bilateral mastectomy, your body's lymphatic system may be working differently, and fluid can sometimes collect in unexpected ways.

Axillary web syndrome is another possibility. This occurs when scar tissue forms in the armpit after lymph node removal, which can sometimes cause swelling and limit movement.

A MyBCTeam member shared a similar experience: "There's a huge concave area... This is where the fluid is collecting." Another mentioned needing multiple drainage procedures for fluid buildup.

Since your medical team hasn't identified the cause yet, it's important to follow up with your surgeon or oncologist. They may recommend additional imaging, drainage if fluid is present, or physical therapy to help resolve the swelling.

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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