Repeat lumpectomy if cancer returns in the same breast

When breast cancer returns in a breast that was treated with a lumpectomy and radiotherapy, doctors call it an in-breast or local recurrence. For many years the usual advice has been a mastectomy, sometimes called a salvage mastectomy, because the breast has already had a full course of radiotherapy and a second full course to the whole breast is generally not given. However, a repeat lumpectomy is possible for some carefully selected women. It is most often considered when the new cancer is small, is found on its own in one area, has appeared a long time after the first treatment, can be removed with clear margins and leaves enough breast to keep a reasonable shape. In some centres, a repeat lumpectomy is combined with partial breast re-irradiation, a targeted radiotherapy to a smaller area, and studies of this approach have shown encouraging results in chosen patients. Before any decision, your team will want to confirm that the cancer has not spread elsewhere, check the receptors on a new biopsy, and work out whether this is a true return of the original cancer or a new cancer in the same breast. Medicines such as chemotherapy, HER2-targeted treatment or hormone therapy may also be recommended. The choice depends on many details and is best made with a breast multidisciplinary team.

Mastectomy remains the usual standard

It is the most common advice for a cancer returning in a previously irradiated breast.

Repeat lumpectomy is an option for some

Small, single, late recurrences with enough breast tissue are the best suited.

Full staging comes first

Scans and a fresh biopsy guide the whole plan.

A repeat lumpectomy can be the right choice for some women, but it is important to understand the trade-offs.

The chance of another return may be higher

Without further radiotherapy, the risk of cancer coming back again in the same breast is generally greater than after a mastectomy.

Re-irradiation is not available everywhere

It needs careful planning and experience, and it can cause firmness, skin changes or shape changes in the breast.

Healing can be slower

Tissue that has had radiotherapy heals less easily, so wound problems are more likely.

Evidence is still growing

Studies are smaller than for first-time surgery, so long-term data are more limited.

What this page cannot tell you

It cannot say whether your recurrence is suitable for a second lumpectomy. That depends on imaging, biopsy results and your team's review.

This is a personal decision as well as a medical one, and it is reasonable to take time to think.

Think about what matters most to you

Some women place great value on keeping their breast. Others prefer the simplest route to lowering the chance of another return.

Ask about reconstruction

If a mastectomy is advised, reconstruction after previous radiotherapy often uses your own tissue, and your surgeon can explain the options.

Consider a second opinion

Because practice varies between centres, a second opinion from a breast team with experience in recurrence can be helpful.