Breast Cancer Wounds: How Radiation Therapy Can Affect Skin and Healing
During Breast Cancer Awareness Month, much of the conversation focuses on prevention, screening, and treatment. But for many survivors, healing continues after active treatment is over. Radiation therapy is often an important part of breast cancer care, and while it can help reduce the risk of recurrence, it may also affect the skin and soft tissue in the treated area. In some patients, these changes can lead to wounds that need closer attention or specialized care.
Most skin changes after breast cancer treatment improve with time and guidance from the care team. Still, some areas may need closer attention, especially if the skin becomes painful, fragile, slow to heal, or opens into a wound. These changes can happen during treatment, soon after surgery or radiation therapy, or even months or years later in tissue that once appeared healed.
That is why it is important to speak up about new or worsening symptoms, even if treatment ended long ago. When skin breaks open, drainage develops, pain worsens, or a wound does not heal as expected, it may be time to ask whether specialized wound care could help.
What are Breast Cancer Treatment-Related Wounds?
Breast cancer treatment-related wounds are areas of skin or tissue damage connected to cancer care. They may occur after lumpectomy, mastectomy, lymph node surgery, reconstruction, radiation therapy, chemotherapy, or other treatments that affect healing. These wounds may include surgical incision problems, radiation dermatitis, delayed radiation injury, lymphedema-related skin breakdown, or, very rarely, malignant or fungating breast wounds.
This article focuses mainly on radiation-related wounds because they can be easy to underestimate. Radiation can affect the treated area while therapy is happening, and it can also change tissue long after treatment is complete.
How Radiation Therapy Can Affect the Skin
Radiation therapy uses high-energy beams to damage or destroy cancer cells. Because the treatment passes through skin and nearby tissue, healthy cells in the treatment field can also be affected. During breast radiation, this may involve the breast, chest wall, underarm, skin folds beneath the breast, or areas near surgical scars.
Common radiation skin changes may include redness or darkening, dryness, itching, tightness, swelling, tenderness, peeling, or areas that feel similar to a sunburn. In some patients, skin can blister, open or become moist and painful. These changes are often called radiation dermatitis or radiodermatitis.
Your radiation oncology team should guide day-to-day skin care during treatment. In general, patients are often advised to clean the area gently, avoid rubbing or scratching, use only approved moisturizers or dressings, protect the area from sun exposure, and avoid heat, ice, or adhesive products unless the care team says they are safe.
What is a Delayed Radiation Injury?
Delayed radiation injury is tissue damage that appears after radiation therapy is finished. It may develop months or years later. In some cases, previously treated tissue becomes thinner, firmer, less flexible, or more easily injured. The area may also have reduced blood flow and oxygen delivery, which are both important for wound healing.
One form of delayed radiation injury is soft tissue radionecrosis, often shortened to STRN. STRN can happen when radiation-damaged tissue is no longer able to repair itself normally. In the breast or chest wall, this may show up as skin breakdown, a wound that reopens, an ulcer that will not close, pain, drainage, or fragile tissue around a surgical or radiation site.
This is why a small injury in a previously radiated area deserves attention. A scratch, pressure point, infection, biopsy, surgery, or friction from clothing may be enough to trigger tissue breakdown in an area where healing capacity is already reduced.
Signs and Symptoms of Radiation Injuries
Some symptoms can happen during radiation therapy or soon after surgery. Others may appear months or years later in tissue that was treated with radiation. Tell your oncology team, surgeon, or healthcare provider if you notice new or worsening symptoms in the breast, chest wall, underarm, or another treated area, including:
- Skin that becomes more red, dark, swollen, warm, firm or painful
- Blisters, peeling, cracking or any new open area
- Drainage, bleeding, odor, or fluid soaking through a dressing
- A wound that is not getting smaller or looks unchanged after several weeks
- Pain that is increasing or interfering with sleep or daily activities
- Hardening, tightness, thickening or a pulling feeling in the breast, chest wall or underarm
- Fever, chills, spreading redness or other signs of infection
These symptoms do not always mean there is a serious problem, but they should be reported so the care team can decide whether the area needs treatment, closer monitoring or specialized wound care. Late radiation effects can be especially confusing because they may not seem connected to cancer treatment at first.
Who May be at Higher Risk for Radiation-Related Wound Problems?
The risk can vary from person to person. Factors that may affect skin reaction or healing include the radiation dose and treatment area, prior radiation in the same area, smoking, diabetes, high blood pressure, poor circulation, infection, autoimmune or connective tissue disease, certain medications, and overall nutrition. Skin folds, areas under the breast, and places exposed to friction or moisture may also need extra monitoring.
Having risk factors does not mean a serious wound will happen. It simply means patients and care teams should be proactive about skin protection, early reporting, and follow-up.
When Should You Seek Specialized Wound Care?
Contact your care team promptly for urgent symptoms such as fever, chills, spreading redness, sudden swelling, severe pain, unexpected bleeding, foul odor, or drainage from an incision or skin opening. If you have shortness of breath, chest pain, sudden weakness, or symptoms your care team has described as an emergency, seek emergency care.
Specialized wound care may be appropriate when a wound is not healing as expected, keeps reopening, is located in a previously radiated area, or is complicated by infection, drainage, tissue death, diabetes, poor circulation, or lymphedema. Wound care specialists can evaluate why healing has stalled and build a plan that supports the wound and the tissue around it.
How Radiation-Related Wounds May Be Treated
Treatment depends on the wound, the surrounding tissue, and the patient’s overall health. A wound care plan may include gentle cleansing, moisture-balancing dressings, infection prevention or treatment, removal of dead tissue when appropriate, pain management, nutrition support and coordination with oncology, surgery, plastic surgery, physical therapy or lymphedema therapy.
For some radiation-related wounds, hyperbaric oxygen therapy may be considered as part of a comprehensive plan. During hyperbaric oxygen therapy, a patient breathes 100% oxygen in a pressurized chamber. This increases the amount of oxygen carried in the blood and may help oxygen reach damaged tissue. The care team determines whether this therapy is appropriate based on the diagnosis, wound type, medical history, and coverage requirements.
Frequently Asked Questions
Can radiation wounds appear years after breast cancer treatment?
Yes. Some radiation-related effects can appear months or years after treatment. Any new skin breakdown, ulcer, drainage, pain, or non-healing wound in a previously radiated area should be evaluated.
Is every radiation skin reaction a chronic wound?
No. Many radiation skin reactions are temporary and improve with oncology-guided skin care. A wound becomes more concerning when the skin opens, drainage develops, infection is suspected, healing stalls, or symptoms worsen instead of improving.
Can hyperbaric oxygen therapy help every radiation wound?
Not every patient or wound is a candidate. Hyperbaric oxygen therapy may be considered for certain radiation-related injuries as part of a broader wound care plan. A wound care or hyperbaric medicine specialist can determine whether evaluation is appropriate.
When is a wound considered non-healing?
A wound that shows little improvement after several weeks, keeps returning, worsens, or develops signs of infection should be evaluated. Do not wait if the wound is in a previously radiated area or if symptoms are getting worse.
Take the Next Step Toward Healing.
Breast cancer recovery does not always end when treatment ends. If you are concerned about a chronic wound or believe poor circulation may be affecting your health, find a Wound Care Center® near you and speak with a healthcare professional about your treatment options.
