Surgery is the cornerstone of treatment for the vast majority of breast cancer patients. Depending on the cancer’s stage, genetic markers, and personal preferences, surgical options can range from removing only the tumor to removing the entire breast, often coupled with breast reconstruction.

Here is a comprehensive overview of breast cancer treatment surgeries, the evaluation of lymph nodes, and what patients can expect during the recovery process.

Primary Surgical Options: Breast-Conserving vs. Mastectomy

The first major decision a patient faces with their surgical oncologist is whether to undergo a breast-conserving surgery or a complete mastectomy.

Visual comparison of mastectomy versus lumpectomy.
Source: Friedman Center

1. Breast-Conserving Surgery (Lumpectomy)

Also known as a partial mastectomy or wide local excision, a lumpectomy removes only the breast cancer tumor along with a small rim (margin) of surrounding normal breast tissue.

• The Goal: Preserve as much of the natural breast appearance as possible.

• The Caveat: A lumpectomy almost always requires post-operative radiation therapy to ensure any remaining microscopic cancer cells are destroyed.

2. Mastectomy

A mastectomy involves the complete removal of all breast tissue. It is recommended for multi-focal tumors (cancer in multiple areas of the breast), very large tumors, or for patients with a strong genetic predisposition (like a BRCA mutation).

• Total (Simple) Mastectomy: The surgeon removes the entire breast tissue, including the nipple and areola, but leaves the underarm lymph nodes intact.

• Skin-Sparing Mastectomy: Breast tissue is removed through a narrow incision around the nipple, leaving the majority of the natural skin envelope intact to facilitate immediate breast reconstruction.

• Nipple-Sparing Mastectomy: The surgeon removes all internal breast tissue but preserves the skin, nipple, and areola. This is option-dependent on the tumor’s location and size.

Axillary Lymph Node Evaluation

Determining whether breast cancer has spread to the underarm (axillary) lymph nodes is a crucial step in staging and determining if systemic treatments like chemotherapy are necessary.

Sentinel Lymph Node Biopsy (SLNB)

The sentinel node is the first specific lymph node to receive fluid drainage from the tumor. During surgery, a blue dye or a mild radioactive tracer is injected near the tumor. The surgeon uses a probe or visual tracking to locate the colored/radioactive nodes, removes them (usually 1 to 3 nodes), and sends them to a pathologist. If these sentinel nodes are cancer-free, no further lymph node removal is needed.

Axillary Lymph Node Dissection (ALND)

If cancer is found in multiple sentinel lymph nodes, or if advanced disease is felt before surgery, a broader axillary dissection may be performed. The surgeon removes a group of lymph nodes (typically between 10 and 20) from the underarm.

Breast Reconstruction Options

Many patients choosing a mastectomy opt for breast reconstruction, which can happen at the same time as the cancer surgery (immediate reconstruction) or months to years later (delayed reconstruction).

• Implant-Based Reconstruction: Uses temporary tissue expanders followed by permanent silicone or saline breast implants to rebuild the breast shape.

• Autologous (Flap) Reconstruction: Uses the patient’s own tissue harvested from another part of the body—most commonly the lower abdomen (a DIEP flap or TRAM flap) or the upper back (latissimus dorsi flap)—to create a natural-feeling breast.

The Recovery Timeline and Post-Op Care

The physical impact of breast surgery depends heavily on whether a lumpectomy or a mastectomy with reconstruction was performed.

Managing Surgical Drains

Mastectomy and reconstruction patients usually go home with one or more temporary bulb drains (Jackson-Pratt drains) stitched into the surgical sites. These drains collect fluid that builds up under the skin during healing, preventing seromas (fluid collections). Patients must measure and empty this fluid daily until the output drops low enough for a nurse or doctor to safely pull the tubes out (usually 1 to 3 weeks).

Typical Recovery Milestones

Physical Restrictions

To prevent incisions from opening and to reduce the risk of fluid retention, patients must adhere to a strict lifting restriction—nothing heavier than a gallon of milk (around 8 lbs) for the first 2 to 4 weeks. Gentle, prescribed shoulder arm exercises are introduced early to prevent joint stiffness (frozen shoulder), but vigorous upper-body workouts must wait until full clearance.

Post-Operative Complications to Watch For

Contact your surgical care team immediately if you notice any of these warning signs at home:

• A fever higher than 101°F (38.3°C)

• Sudden, significant swelling or hardness in the breast area or underarm

• Warmth, widening redness, or foul-smelling fluid weeping from the incisions

• A feeling of fluid sloshing around under the skin (seroma)

• Severe swelling, tightness, or a heavy aching pain in the arm on the side of your surgery—this can be an early indicator of lymphedema (fluid buildup caused by missing lymph nodes).