After breast cancer surgery, many women find that their two breasts look and feel significantly different from each other. Whether following a lumpectomy that has altered the shape of the treated breast, or a mastectomy with reconstruction that has produced a different size or position from the natural breast, this asymmetry is one of the most common and least-discussed consequences of breast cancer treatment.

For some women, the difference is subtle and manageable. For others, it is significant enough to affect how they dress, how they feel in their own body, and how they relate to themselves after a profoundly difficult experience. The daily visual reminder of asymmetry can interfere with recovery, body image, and overall quality of life in ways that deserve to be taken seriously.

Breast symmetrisation surgery addresses this directly. It is a procedure performed on the unaffected or less-treated breast to bring it into closer alignment with the treated side in terms of size, shape, and position, restoring a more balanced and natural appearance. It is an integral and recognised component of breast cancer care, not an optional cosmetic extra, and it is available to women at any stage after treatment is complete.

At Breast & Surgical Oncology at The Poche Centre, our surgeons approach symmetrisation as part of a planned and integrated oncoplastic strategy. We discuss it with patients before cancer surgery where possible, plan it as part of the overall treatment picture, and deliver it with the same surgical expertise and attention to detail that underpins all of our oncoplastic work.

Why Symmetrisation Matters

Research consistently demonstrates that body image after breast cancer surgery has a meaningful impact on psychological wellbeing, self-confidence, and quality of life. Women who are satisfied with the cosmetic outcome of their surgery report significantly better outcomes across these measures compared to those who are not. Symmetry between the two breasts is one of the most important contributors to cosmetic satisfaction.

Breast asymmetry after cancer treatment can make it difficult to find well-fitting bras and clothing, can draw attention to the surgical side in a way that feels unwanted, and can serve as a persistent daily reminder of cancer at a time when many patients are trying to move forward. The physical weight of these experiences is real, and symmetrisation surgery is a clinically validated intervention for addressing them.

Beyond the psychological dimension, there are also practical functional benefits. Correcting significant size asymmetry improves bra fit and the distribution of weight across the chest, which can reduce neck and shoulder discomfort. After reconstruction, symmetrisation of the natural breast can improve the drape of clothing and reduce the self-consciousness that many women feel in the transition back to normal life.

Medicare and Private Health Insurance

Breast symmetrisation surgery performed to correct the effects of breast cancer treatment is recognised by Medicare and attracts a rebate under the Medicare Benefits Schedule. Private health insurance (with appropriate surgical cover) will also contribute, reducing the out-of-pocket cost significantly.

This rebatability reflects the clinical recognition that symmetrisation is not a cosmetic indulgence but a standard and important component of comprehensive breast cancer care. Your surgeon will confirm rebate eligibility at your consultation and our rooms can assist with pre-authorisation from your insurer where needed.

When Is the Right Time for Symmetrisation Surgery?

The timing of symmetrisation surgery depends on several factors, including the type of cancer surgery performed, whether radiotherapy has been or will be administered, the current state of the treated breast, and your personal readiness and goals.

At the time of primary cancer surgery is often the ideal moment for symmetrisation planning. When a therapeutic mammoplasty (breast reduction pattern excision) or other oncoplastic procedure is planned on the cancer side, the opposite breast can frequently be reduced or lifted at the same operation to achieve symmetry from the outset. This approach avoids the need for a second procedure and produces the most coordinated overall result. Our surgeons discuss this option with eligible patients before their cancer operation.

After lumpectomy and radiotherapy is the most common scenario for delayed symmetrisation. Radiotherapy causes ongoing changes to the treated breast over twelve to eighteen months after treatment, including tissue contraction, fibrosis, and sometimes volume loss. It is generally advisable to allow these changes to stabilise before performing symmetrisation, to ensure the procedure is planned against a stable final appearance rather than a breast that is still changing. Most surgeons recommend waiting at least twelve months after completing radiotherapy before symmetrisation.

After mastectomy and reconstruction is another common context. The reconstructed breast and the natural breast will never be perfectly identical, and over time the natural breast continues to change with age and weight while the reconstructed breast does not. Symmetrisation of the natural breast can be performed at the time of reconstruction or as a planned subsequent procedure once reconstruction is well established.

Delayed symmetrisation at any point after treatment is also available to women who did not have symmetrisation discussed or offered at the time of their original treatment, or who have developed more significant asymmetry over time. It is never too late to have a conversation about symmetrisation. If you are unhappy with the appearance of your breasts following cancer treatment, please seek a consultation.

Symmetrisation Techniques

The most appropriate symmetrisation technique depends on the nature and extent of the asymmetry, the size and shape of the natural breast, and your goals. Your surgeon will assess all of these at consultation and recommend the approach most likely to achieve the best result for your anatomy.

Breast reduction on the natural breast is the most commonly required symmetrisation procedure, particularly after therapeutic mammoplasty or oncoplastic lumpectomy has reduced the volume of the treated breast. The natural breast is reduced in volume and reshaped using a reduction mammoplasty pattern to match the treated side. This also lifts the breast to restore a more youthful, symmetrical position.

Breast lift (mastopexy) on the natural breast is appropriate when the asymmetry relates more to position and shape than volume. Over time, the natural breast continues to ptose (droop) while a reconstructed or irradiated breast does not change in the same way, creating a positional asymmetry even when the volumes are similar. A mastopexy lifts and reshapes the natural breast to restore a more balanced position and contour.

Breast augmentation on the natural breast is used when the treated or reconstructed breast is larger than the natural breast, and volume needs to be added to the natural side rather than reduced. This is most common after mastectomy and reconstruction where the reconstruction has a particular size or shape, and may involve a silicone implant or fat transfer depending on the volume required and the patient's preference.

Fat transfer (lipofilling) to either breast is a versatile adjunct that can add modest volume, smooth contour irregularities, or address specific areas of deficit in either the treated or the natural breast. It is harvested from the abdomen, thighs, or flanks by liposuction and injected into the targeted area as a day procedure. Multiple sessions may be performed to achieve the desired result.

Nipple symmetrisation addresses differences in nipple size, position, or projection between the two sides. After reconstruction or after significant volume change from cancer surgery, the position and appearance of the nipple on the treated side may differ from the natural side. Minor adjustments can be made to the nipple of the natural breast to improve the overall match.

In many cases, the best symmetrisation result requires a combination of techniques applied thoughtfully to one or both breasts. Your surgeon will design a plan that addresses your specific asymmetry comprehensively.

What to Expect

At consultation, your surgeon will assess the current appearance of both breasts, discuss the nature and extent of the asymmetry, explain the options and what each would involve, and advise on the rebate position for your procedure. There is no pressure to proceed on any particular timeline. These decisions are entirely yours to make at a pace that feels right.

Before surgery, relevant investigations will be arranged (imaging, blood tests). You will be advised to cease smoking at least four to six weeks before the procedure if applicable, and to temporarily stop blood-thinning medications. A pre-operative appointment will confirm all arrangements and allow any remaining questions to be addressed.

The procedure is performed under general anaesthetic at one of our partner hospitals, typically as a day procedure or with one overnight stay depending on the complexity.

Recovery generally involves one to two weeks of reduced activity and six weeks before returning to strenuous exercise. Bruising and swelling are expected in the first two to three weeks and gradually resolve. Most patients are comfortable with regular oral analgesia for the first few days. Follow-up appointments are scheduled to monitor healing and assess the result.

The final appearance of the symmetrised breast continues to evolve as swelling subsides and scars mature over three to six months. Your surgeon will set realistic expectations at consultation about what the final result is likely to look like and how long it will take to fully appreciate.

Risks and Complications

Breast symmetrisation is a well-established and safe procedure. As with all surgery, risks include infection, bleeding or haematoma, wound healing problems, and anaesthetic risks. Procedure-specific risks include scarring (all reduction and lift procedures leave visible scars, which fade over twelve to eighteen months), temporary or permanent changes in nipple sensation, difficulty or inability to breastfeed from the operated breast, asymmetry requiring revision, and fat necrosis after lipofilling (firm areas of fat that has not survived transfer, which usually resolve over time). All risks will be discussed in detail at your pre-operative consultation.

Risks and Complications

Mastectomy is a safe and well-established procedure. All risks will be discussed in detail with you before surgery. They include infection, bleeding or haematoma, seroma, wound healing issues,, shoulder stiffness, numbness of the chest wall and arm, lymphoedema (if axillary surgery is performed), and — where reconstruction is involved — reconstruction-specific risks including implant complications or flap-related issues that your surgeon will explain in detail.

Breast Symmetrisation at Breast & Surgical Oncology at The Poche Centre

Our surgeons bring dedicated oncoplastic expertise to every symmetrisation procedure. We understand the cancer context in which this surgery sits, the significance of the decision for patients who have already been through a great deal, and the importance of achieving a result that allows women to move forward with confidence.

If you are living with breast asymmetry following cancer treatment and would like to explore your options, we welcome the opportunity to meet with you.

This page is intended as a general guide only and does not replace personalised medical advice. Suitability for symmetrisation surgery is highly individual and should be discussed with your specialist.