How Long Does Swelling Last After a Mastectomy?

Swelling is a normal and expected part of recovery after a mastectomy for breast cancer. Understanding the types and timelines of this swelling can help individuals manage expectations and reduce anxiety during healing.

Initial Post-Mastectomy Swelling and Its Timeline

Immediate post-operative swelling occurs in nearly all patients due to the body’s natural inflammatory response to surgery. This acute swelling is often caused by fluid accumulation, sometimes forming a seroma (a collection of clear fluid near the surgical site). The swelling may affect the breast, chest wall, shoulder, and arm.

This initial swelling typically peaks within the first few days or weeks. It gradually subsides over several weeks to a few months, usually lessening within 6 to 8 weeks. The extent of surgery, individual healing capacity, and whether reconstruction was performed can influence its duration. A small amount of swelling, even in the arm, is considered normal for the first 4 to 6 weeks after breast cancer surgery.

Understanding Lymphedema After Mastectomy

Lymphedema is a distinct type of swelling that can occur after mastectomy, differing from initial post-operative fluid retention. This condition is characterized by chronic swelling resulting from impaired lymphatic drainage. It often affects the arm, hand, fingers, shoulder, chest, or breast area on the side where lymph nodes were removed.

Lymphedema develops when lymph nodes, particularly axillary lymph nodes in the armpit, are removed or damaged during surgery, such as axillary lymph node dissection (ALND). This prevents lymph fluid from draining properly, leading to its buildup in tissues. Radiation therapy to the lymph nodes can also contribute to lymphedema by causing scarring and blockages in the lymphatic system.

Symptoms of lymphedema include a feeling of fullness, heaviness, or tightness in the affected limb, or clothing and jewelry fitting more snugly. While a mild form can appear within days or weeks after surgery and resolve, the most common type develops gradually, often painlessly, 18 to 24 months or even years after surgery. The risk persists for the rest of a person’s life.

Strategies for Managing Swelling

Managing swelling after a mastectomy involves several approaches to reduce fluid accumulation and promote comfort. Elevating the affected arm above the heart can help gravity drain fluid and reduce swelling. Pillows or a recliner can support this elevated position.

Gentle exercises, as recommended by a healthcare professional, improve circulation and encourage lymphatic drainage. Simple movements like hand pumps, shoulder circles, and arm lifts can be performed multiple times daily to aid recovery and prevent stiffness. These exercises should be done without pain, and activity gradually increased based on medical advice.

Compression garments, such as sleeves or specially designed bras, provide gentle pressure to the affected area, helping move fluid and prevent buildup. Good skin care is also important, involving daily cleansing with mild, pH-balanced products and moisturizing to prevent dryness and cracking that can increase infection risk. Protecting the skin from cuts, scrapes, and sunburn is also important.

When to Consult a Healthcare Professional

Consult a healthcare professional if any concerning signs or symptoms arise during mastectomy recovery. Sudden increases in swelling, severe pain, or changes in skin color or warmth warrant immediate medical attention. These could indicate an infection, presenting with symptoms such as redness, increased warmth, pus or discharge from the wound, or a fever above 37.5°C (100.4°F).

New numbness or tingling, or persistent pain not improving with medication, should also be reported. If swelling persists beyond the expected timeline for initial healing, or if new signs of lymphedema appear or worsen, a doctor should be consulted. Early detection and treatment of complications can help manage the condition and improve outcomes.