For most women diagnosed with early-stage breast cancer, breast-conserving surgery (removing the tumour while keeping the breast)  is not only possible but is the preferred surgical approach.

A lumpectomy, also called wide local excision (WLE) or breast-conserving surgery, removes the cancer along with a surrounding margin of healthy tissue, leaving the remainder of the breast intact.

Decades of research have established clearly that for appropriate candidates, lumpectomy followed by radiotherapy achieves the same long-term cancer survival outcomes as mastectomy (complete breast removal). Women who are suitable for breast-conserving surgery do not compromise their cancer outcome by choosing it, and they preserve their breast in the process.

At Breast & Surgical Oncology at The Poche Centre, our surgeons perform breast-conserving surgery with a strong emphasis on achieving the best possible oncological and aesthetic result simultaneously. Our oncoplastic expertise means that the cancer operation and the reconstructive shaping of the remaining breast are considered together from the outset, not as separate concerns.

Who Is Suitable for Lumpectomy?

The majority of women with early-stage breast cancer are suitable candidates for breast-conserving surgery. Suitability is determined by several factors that your specialist will assess in the context of your specific diagnosis, anatomy, and preferences.

Lumpectomy is generally well-suited for patients with a single, localised tumour that can be removed with a clear margin without removing a disproportionate amount of breast tissue, early-stage invasive breast cancer (stage I or II), and ductal carcinoma in situ (DCIS) in many cases.

Neoadjuvant therapy first — for patients whose tumour is larger relative to breast size, or whose initial imaging suggests that a clear margin may be difficult to achieve while preserving an acceptable cosmetic result, neoadjuvant (pre-surgery) chemotherapy or hormonal therapy may be recommended first. Shrinking the tumour before surgery can convert a patient who would otherwise require mastectomy into a suitable candidate for breast conservation, and this is an active and important part of how we approach surgical planning for many patients.

When mastectomy may be more appropriate — some patients are not ideal candidates for lumpectomy. These include patients with multiple separate areas of cancer within the same breast, very large tumours relative to breast size that cannot be adequately reduced by neoadjuvant treatment, inflammatory breast cancer, prior radiotherapy to the same breast, or strong personal preference for complete breast removal to avoid the ongoing need for radiotherapy or the possibility of recurrence requiring further surgery. Your surgeon will discuss all options honestly and help you understand which approach best suits your circumstances.

Before Surgery — Localisation

If the tumour is palpable — meaning it can be felt on examination — no special pre-operative localisation is required. However, many breast cancers, particularly those detected through screening, are impalpable and require pre-operative marking so the surgeon can precisely locate the area to be removed during the operation.

Localisation is performed on the day of or day before surgery by a radiologist, using either:

Hook-wire localisation — a fine flexible wire with a small hook at its tip is inserted into the tumour under mammographic or ultrasound guidance, leaving a marker in place that the surgeon uses as a guide during the operation.

Wire-free ROLL (Radio-isotope Occult Lesion Localisation) — a small amount of radioactive tracer is injected directly into or adjacent to the tumour under imaging guidance. During the operation, a gamma probe detects the radioactive signal, allowing the surgeon to precisely locate and remove the targeted tissue without a wire. This is our preferred technique in many cases and can be performed the day before surgery, offering greater flexibility for the patient.

Both techniques are safe, minimally uncomfortable, and performed under local anaesthetic.

Types of Breast-Conserving Surgery

Wide local excision is not a single operation. It describes a family of breast-conserving procedures that range from straightforward tumour excision through to complex oncoplastic reshaping using tissue from within or outside the breast. The right approach for you depends on the size and location of your tumour, the size of your breast, the volume of tissue that needs to be removed, and your personal preferences and goals.

Your surgeon will recommend the most appropriate procedure at your pre-operative consultation, with the goal of achieving the widest safe margin around the tumour while producing the best possible cosmetic result.

Wide Local Excision (Standard Lumpectomy)

Standard wide local excision removes the tumour and a surrounding margin of apparently normal breast tissue through a carefully placed incision. The incision is positioned wherever possible within natural skin creases, around the areola, or in positions concealed by clothing, to minimise visible scarring.

This approach is most appropriate when the volume of tissue to be removed is small relative to the overall breast size, meaning that adequate margin clearance can be achieved without producing a significant contour defect or asymmetry. For women with larger breasts and smaller tumours, and for tumours in the upper outer quadrant where there is the most available tissue, standard lumpectomy can produce excellent results.

After removal of the tumour, the lumpectomy cavity is managed with simple mobilisation and closure of the surrounding glandular tissue to minimise any residual deformity. Careful incision placement and wound closure produce a scar that typically fades well over twelve to eighteen months.

Standard lumpectomy is a day procedure, performed under general anaesthetic, typically taking 45 to 90 minutes including sentinel lymph node biopsy. Most patients go home the same day.

Wide Local Excision with Mammoplasty (Oncoplastic Breast Reshaping)

When the volume of tissue to be removed would produce a visible deformity with standard lumpectomy closure, oncoplastic reshaping techniques are used to manage the cavity and restore the breast contour in the same operation.

Oncoplastic reshaping involves the active mobilisation and redistribution of the remaining breast tissue after tumour excision, filling the cavity and reshaping the breast mound to restore a natural contour. This approach sits between standard lumpectomy (minimal reshaping) and therapeutic mammoplasty (full reduction pattern), and is applied when the defect is significant but not so large as to require the full tissue rearrangement of a reduction pattern.

Specific techniques include:

Glandular flaps — adjacent breast tissue is mobilised on a vascular pedicle and rotated or advanced to fill the lumpectomy cavity, restoring volume and contour without importing tissue from outside the breast. Glandular flaps are versatile and can be designed to address defects in most breast quadrants.

Batwing (Omega) and hemibatwing techniques — crescent-shaped tissue rearrangements particularly useful for tumours in the upper pole of the breast, allowing the cavity to be closed while maintaining the position of the nipple-areola complex.

Racquet and tennis racquet techniques — used for central and periareolar tumours, these techniques incorporate the nipple-areola complex into the resection if needed while achieving a well-shaped closure.

Round block (periareolar) technique — useful for smaller volume defects near the areola, using a periareolar incision pattern to allow cavity closure with a scar concealed around the areola border.

Where the reshaping of the cancer breast produces or worsens asymmetry with the opposite breast, a symmetrising procedure (reduction, lift, or augmentation) on the non-cancer breast can be performed at the same or a subsequent operation.

Wide Local Excision with Reduction (Therapeutic Mammoplasty)

For women with larger or heavier breasts, the most powerful and clinically effective form of oncoplastic breast-conserving surgery is therapeutic mammoplasty — wide local excision performed using a breast reduction pattern.

The tumour is excised within the segment of breast tissue removed as part of the reduction, the remaining tissue is reshaped and lifted, and the nipple-areola complex is repositioned to a more natural, elevated position. This approach allows a significantly wider and more confident margin to be taken around the tumour compared to standard lumpectomy, while simultaneously producing a well-shaped, lifted breast.

The non-cancer breast is reduced and lifted at the same operation to achieve symmetry. The result is a single procedure that addresses the cancer, reshapes both breasts, and restores symmetry in one anaesthetic.

Therapeutic mammoplasty is particularly well-suited to tumours in the lower, central, and inner breast, where standard excision is most likely to produce a visible deformity. It also benefits women who have pre-existing symptoms of large breast size (neck, back, and shoulder pain), as the reduction component addresses those symptoms at the same time.

The most commonly used reduction patterns in therapeutic mammoplasty are the Wise (inverted-T or anchor) pattern and the vertical scar (short scar) pattern. The choice depends on breast size, tumour location, and the degree of reduction planned.

Read the full Therapeutic Mammoplasty page

Wide Local Excision with Perforator Flap

When there is insufficient local breast tissue to adequately fill a lumpectomy cavity — most commonly in smaller-breasted women or where a larger volume has been removed — tissue from outside the breast can be used to replace the excised volume. This is a volume replacement technique, as distinct from the volume displacement approaches described above.

Perforator flaps use small islands of skin and fat from the lateral chest wall or adjacent areas, supplied by named perforating blood vessels, to fill the lumpectomy defect from an adjacent donor site. Because these flaps retain their own blood supply through a defined perforator vessel, they can be reliably transferred to fill the cavity without the need for microsurgery.

Perforator flaps commonly used in partial breast reconstruction include the following.

LICAP flap (Lateral Intercostal Artery Perforator flap) — uses skin and fat from the lateral chest wall, supplied by lateral branches of the intercostal arteries. It is particularly well-suited for tumours in the upper outer, lateral, and axillary tail regions of the breast, where the donor tissue is immediately adjacent to the defect. The LICAP flap is one of the most reliable and commonly used perforator flaps in oncoplastic breast surgery.

LTAP flap (Lateral Thoracic Artery Perforator flap) — uses tissue from the lateral chest wall supplied by the lateral thoracic artery. It is useful for upper outer quadrant defects and can reach defects in the axillary tail region.

AICAP flap (Anterior Intercostal Artery Perforator flap) — uses skin and fat from the anterior chest wall supplied by anterior intercostal perforators. It is most useful for medial and central breast defects.

TDAP flap (Thoracodorsal Artery Perforator flap) — uses skin and fat from the upper back and lateral chest wall supplied by the thoracodorsal artery. It provides a larger volume of tissue than the lateral chest wall flaps and can reach most quadrants of the breast. It is the preferred option when a larger volume replacement is needed in a smaller-breasted patient where local breast tissue is insufficient.

Perforator flap reconstructions are more complex procedures than standard lumpectomy or volume displacement techniques, and are performed under general anaesthetic with a longer operative time. They are typically suitable for day surgery or one overnight stay. The donor site scar on the lateral chest wall or back is generally well-concealed within the bra line and fades well over time.

Your surgeon will assess whether a volume replacement approach is appropriate for your anatomy and will discuss the specific flap options and their donor site implications at your pre-operative consultation.

Margins — What They Mean and What Happens If They Are Not Clear

One of the most important aspects of lumpectomy is achieving clear margins — meaning there is no cancer found at the edges of the removed tissue when the pathologist examines it under the microscope. Clear margins indicate that the cancer has been completely excised with a buffer of normal tissue around it, which is associated with a lower risk of local recurrence.

The margin status is determined by the pathologist after the operation and is typically available within five to seven days.

If margins are clear, no further surgery is required and you can proceed to the next stage of treatment, usually radiotherapy.

If margins are involved or close, a further surgical procedure — a margin re-excision — may be recommended. This involves returning to the operating theatre to remove an additional layer of tissue from around the lumpectomy cavity, to ensure the tumour has been fully cleared. A margin re-excision is a common and expected part of the breast-conserving surgery pathway for some patients, occurring in approximately 15 to 25% of cases, and does not indicate a failure of the original operation. In most cases it can be completed as a day procedure.

In some cases, if margins cannot be cleared adequately with re-excision, conversion to mastectomy may be recommended to ensure complete removal of the disease. This decision is always made collaboratively with you, with full explanation of the reasons.

The Role of Radiotherapy After Lumpectomy

Radiotherapy to the remaining breast tissue is a standard and important component of breast-conserving treatment and is recommended for almost all patients following lumpectomy. It significantly reduces the risk of local recurrence, and is the reason that lumpectomy achieves equivalent long-term survival outcomes to mastectomy.

Radiotherapy is typically delivered as an outpatient treatment over three weeks following surgery, though shorter hypofractionated schedules are increasingly used and may be appropriate for many patients.

Your radiation oncologist will be involved in your care from early in the treatment planning process and will discuss the recommended radiotherapy approach with you in detail.

Oncoplastic Symmetrisation of the Opposite Breast

Where a significant volume of tissue is removed from one breast, asymmetry between the two breasts may result even with oncoplastic reshaping of the treated breast. In these cases, a symmetrising procedure on the opposite breast — reduction, lift, or augmentation — can be performed either at the same time as the lumpectomy or as a planned subsequent procedure, to achieve the best possible overall balance and appearance.

Symmetrisation surgery following breast cancer treatment is a Medicare-rebatable procedure and is an important part of the overall care we provide. Our surgeons plan these procedures as an integrated component of the cancer operation, not as an afterthought.

Recovery After Lumpectomy

Most lumpectomies are performed as day surgery or with one overnight stay in hospital, depending on the complexity of the procedure. Recovery is generally straightforward and significantly faster than recovery from mastectomy.

In the first few days — some pain and tenderness at the surgical site is expected and is managed with regular oral analgesia. Most patients are comfortable with paracetamol and anti-inflammatory medication. The waterproof dressing should be left in place until your follow-up appointment. You can shower normally with the dressing on.

Returning to normal activities — most patients are able to resume light daily activities within a few days. Driving should be avoided until you have comfortable range of movement of the arm and are no longer taking stronger pain medication, usually within one to two weeks. Strenuous upper-body activity and lifting should be avoided for four to six weeks.

Seroma — a collection of fluid at the surgical site is a common and normal part of healing after breast surgery. It may cause visible swelling or a soft, fluid-filled area over the wound. Most seromas resolve on their own; large or uncomfortable ones can be drained with a fine needle at your follow-up appointment.

Arm and shoulder symptoms — some patients experience temporary numbness, tightness, or restricted shoulder movement, particularly if a sentinel lymph node biopsy was performed. Physiotherapy exercises, begun soon after surgery, help restore full shoulder function and reduce the risk of longer-term stiffness.

Follow-up appointment — a follow-up consultation is scheduled approximately one to two weeks after surgery to check the wound, review pathology results, and discuss the next steps in your treatment plan.

Risks and Complications

Lumpectomy is a well-tolerated and safe procedure. As with any surgical operation, risks exist and will be discussed with you in full before you consent to the procedure. These include bleeding or haematoma at the surgical site, wound infection, seroma, scarring, changes in breast shape or contour, arm swelling (lymphoedema) when axillary surgery is performed, numbness or altered sensation particularly in the upper inner arm after lymph node surgery, shoulder stiffness, and the need for further surgery if margins are not clear or if revision of the oncoplastic result is needed.

For oncoplastic procedures involving perforator flaps additional donor site risks apply, including donor site scarring and, very rarely, partial or complete flap loss. These will be discussed in detail at your pre-operative consultation.

Choosing the Right Breast-Conserving Approach

The choice between standard lumpectomy, oncoplastic reshaping, therapeutic mammoplasty, and perforator flap reconstruction is not something you need to determine yourself. It is a recommendation your surgeon will make based on your tumour characteristics, your breast size and anatomy, the volume of tissue requiring excision, and your personal goals.

What matters is that the conversation happens before surgery, and that you leave your pre-operative appointment with a clear understanding of what is planned and why. Our surgeons take the time to explain every option and ensure every patient is genuinely informed before proceeding.