What oncoplastic surgery is — and what it is not
Oncoplastic breast surgery combines two things in a single operation: removing the tumour to proper oncological standards, with a rim of healthy tissue around it, and reshaping the breast tissue that remains. Put simply, the disease dictates what comes out; surgical planning determines how what is left is arranged.
This is not aesthetic breast surgery, and it should not be presented as such. The governing rule of the approach is that the surgical margin is never compromised for the sake of shape. Removing the cancer safely always comes first. Planning the remaining tissue is a second objective that only comes into play once the first has been met.
The genuine contribution of these techniques lies in two places. The first is that breast conservation becomes feasible for a wider group of women than straightforward lumpectomy alone would allow. The second is that the contour defect, asymmetry and nipple displacement that can follow removal of a sizeable piece of tissue are anticipated and addressed during the operation, rather than left to be corrected later — which is considerably harder.
Why it is needed: margins and breast contour
In breast-conserving surgery the tumour is excised together with a surrounding cuff of healthy tissue. The pathologist must find that margin clear; if it is not, further surgery may be required. Taking an adequate margin can leave a noticeable defect, particularly in a smaller breast or where the tumour is large relative to the volume of the breast.
That defect is not simply a question of appearance. Radiotherapy, which follows breast-conserving surgery as a matter of course, tends to accentuate retraction and firmness in a breast that already has a cavity in it. Correcting a contour deformity in irradiated tissue afterwards is difficult and not always possible. The oncoplastic approach therefore closes the defect deliberately at the time of the operation, redistributing the breast tissue while it is still healthy and mobile.
There is a further consequence worth stating plainly. Because the surgeon knows the defect will be reconstructed, a wider excision can be taken with more confidence. Oncoplastic surgery does not mean removing less tissue; if anything it makes it easier to remove enough.
Volume displacement and volume replacement
Oncoplastic techniques divide into two broad groups, and the logic behind both is straightforward: the missing volume is either filled with the breast's own tissue or replaced with tissue brought in from outside it.
Volume displacement uses the breast itself. Once the tumour is out, the remaining breast tissue is mobilised as carefully raised flaps — with their blood supply preserved — and advanced to fill the cavity. In women with adequate breast volume this can be combined with the incision patterns used in breast reduction and lift procedures, so that the tumour is removed within the segment of breast that is being reduced and the nipple is repositioned as part of the same plan.
Volume replacement brings tissue in from beyond the breast to make up what has been removed. The most commonly used are pedicled flaps raised from the lateral chest wall or the back, transferred with their own blood supply intact. This route is chiefly relevant in women with smaller breasts, where there is simply not enough local tissue to close the defect by redistribution.
Which technique is appropriate depends on where the tumour sits and how large it is, the volume and degree of ptosis of the breast, smoking, coexisting conditions such as diabetes, and the planned radiotherapy. That choice can only be made on examination, within the treatment plan agreed by the multidisciplinary team.
Symmetrising the other breast
When the volume of one breast changes, a difference in size and position between the two can follow. Symmetrisation refers to surgery on the opposite breast — usually a reduction or a lift, less often the addition of volume — intended to reduce that difference.
It is not recommended to everyone, and where it is recommended it often does not need to be done at the same sitting. Because the treated breast can change somewhat after radiotherapy, surgery on the opposite side is frequently deferred until oncological treatment is complete and the tissues have settled.
Any operation on the opposite breast requires that breast to have been imaged and assessed first, and any tissue removed is sent for pathological examination in the usual way. Whether to have symmetrisation at all is the patient's own decision, and declining it has no bearing on the adequacy of cancer treatment.
Immediate and delayed reconstruction
Where mastectomy is required, breast reconstruction may be carried out during the same operation — immediate reconstruction — or at a later stage of treatment, which is termed delayed reconstruction.
The advantage of immediate reconstruction is that the breast skin and the inframammary fold are preserved, and the process is completed within a single surgical episode. It is not suitable for every patient. How close the tumour lies to the skin, whether radiotherapy will be needed afterwards, smoking, diabetes and circulatory problems all bear directly on the decision. Where radiotherapy is planned, the timing of reconstruction is discussed separately by the team, since irradiation affects both native tissue and any implant used.
Delayed reconstruction is planned once oncological treatment is finished. It is not a lesser option or a consolation: in certain circumstances it is both safer and more predictable. Choosing not to have reconstruction at all is equally valid and has no effect whatsoever on the adequacy of cancer treatment. Like the cancer operation itself, the reconstruction decision belongs within the plan set by the multidisciplinary tumour board.
Expectations, recovery and follow-up
Oncoplastic operations generally take longer than a standard lumpectomy and involve more extensive incisions. Recovery depends on the technique used and varies from patient to patient. Where tissue flaps are involved, a drain is usually placed and movement may be restricted for a period.
No one should be told that the breast will look exactly as it did before. Scars remain, sensation in the skin and nipple may change, and irradiated tissue continues to alter over time. The honest expectation is not a breast that is “as it was” but one that is balanced and recognisably your own. Having that conversation before the operation, rather than after, makes the adjustment afterwards considerably easier.
Oncological follow-up continues unchanged after oncoplastic surgery: the same schedule of examination and imaging applies. The one practical difference is that, because the tissue has been rearranged, the radiologist reporting your mammograms needs to know which technique was used. At our centre, oncoplastic options are discussed only once the oncological plan is settled and after listening to what the patient herself wants. It is a matter of planning rather than preference, and it requires examination.
Frequently asked questions
Is oncoplastic surgery a cosmetic operation?
No. It is cancer surgery. Its purpose is to remove the tumour to proper oncological standards with a clear surgical margin. Reshaping the remaining breast tissue is a second objective that only applies once that requirement has been met. The margin is never compromised for the sake of appearance.
Do oncoplastic techniques make the cancer treatment less safe?
The intent is the opposite: these techniques exist so the surgeon can remove an adequate volume of tissue without compromising margins. The specimen goes to pathology in the usual way and margins are judged by the same criteria. The plan for chemotherapy, endocrine therapy and radiotherapy is unaffected and is set by the multidisciplinary tumour board.
Can every patient have oncoplastic surgery?
No. Suitability depends on where the tumour sits and how large it is, the volume and shape of the breast, smoking, coexisting conditions such as diabetes or circulatory disease, and the planned radiotherapy. For some women mastectomy is the more appropriate operation. Only assessment of the examination findings, imaging and pathology together can determine this.
Do I have to have surgery on my other breast as well?
No. Symmetrisation is an option, not a requirement. Even when it is recommended it usually does not need to be done at the same sitting; because the treated breast can change after radiotherapy, it is often deferred until treatment is complete. Declining surgery on the opposite side does not affect the adequacy of your cancer treatment.
Can reconstruction be done at the same time as mastectomy?
In some patients, yes. Immediate reconstruction preserves the breast skin and the inframammary fold. But proximity of the tumour to the skin, the need for radiotherapy, smoking and circulatory problems all bear on the decision, and where radiotherapy is planned the team considers timing separately. Delayed reconstruction is in some circumstances both safer and more predictable.
Can I still have mammograms after oncoplastic surgery, and how is follow-up done?
Yes — surveillance imaging continues for anyone who has had breast-conserving surgery. Because the tissue has been rearranged, post-surgical changes are visible on mammography, so it matters that the reporting radiologist knows which technique was used. The intervals and methods of follow-up are set according to your treatment plan and continue on a regular schedule.