01Purpose and principlesWhat the treatment does and how it fits into care.
An ordinary wide local excision may leave a defect that is difficult to close without drawing the nipple towards the cavity or flattening one part of the breast. Oncoplastic conservation anticipates that consequence before the cancer is removed. The surgeon either redistributes the remaining gland or replaces missing volume with vascularised tissue from outside the breast. The purpose is a complete oncological operation with an acceptable healed breast. The cancer extent, size and location of the intended excision, breast volume, skin envelope, ptosis and the patient's preferences all affect the choice. A technically possible rearrangement is only one component of suitability: the multidisciplinary team must also consider the feasibility of clear margins and the radiotherapy needed for that individual cancer.
The procedure changes the geography of subsequent care. Once tissue has moved, the visible scar and apparent cavity may no longer reliably identify the original tumour bed. A successful operation therefore leaves an intelligible record for pathology, radiology and oncology, including specimen orientation, cavity localisation and the reconstruction performed. Patients need to understand the possibility of further surgery if margins prove inadequate, asymmetry after treatment, altered sensation, wound problems and later fat necrosis. They may reasonably favour a smaller operation, a different breast size, a staged reconstruction or mastectomy. Presenting one technically elegant option as the inevitable next step can obscure those legitimate choices.
Key points
- Oncoplastic conservation combines cancer excision with volume displacement or replacement; a cosmetic opportunity does not make an oncologically unsuitable conservation operation safe.
- Displacement reshapes remaining breast tissue, often through therapeutic mammoplasty in a larger ptotic breast; replacement brings tissue into a defect when the remaining breast volume is insufficient.
- Orient the specimen and mark the tumour bed with titanium clips for radiotherapy. Offer further surgery for invasive cancer or DCIS at a radial margin; consider it for invasive cancer more than 0 but less than 1 mm away, or pure DCIS more than 0 but less than 2 mm away.
- Plan tissue rearrangement with the imaging, pathology and radiotherapy teams; a displaced cavity can make later margin re-excision and boost targeting less straightforward.
- Preserve perfusion of the skin and nipple-bearing tissue. Increasing pain, deteriorating skin or an expanding postoperative breast requires prompt review.
- Contralateral reduction or uplift can be immediate or delayed; assess its effect on wound risk and the planned chemotherapy or radiotherapy timetable.
02Indications, selection and cautionsWho may benefit, who needs urgent treatment and important alternatives.
In a larger, ptotic breast, therapeutic mammoplasty can combine a substantial excision with reduction and reshaping. The remaining tissue is moved to close the defect rather than imported from a remote donor site. Breast size alone does not select the operation: the tumour position, the route supplying the nipple-bearing tissue and the planned skin excision must work together. If an excision would remove tissue needed to keep that nipple or skin viable, another design or operation may be necessary. A patient who would welcome reduction may regard this as a benefit, while someone strongly wishing to preserve current size may prefer a different approach.
A relatively small breast with a significant local defect may have too little tissue to redistribute without distortion. A chest-wall perforator flap can replace the missing volume while leaving most of the original breast in place. The donor area and vascular territory must reach the actual defect: lateral and anterior defects do not automatically have the same solution. Explain the additional scar, donor discomfort and potential contour change. Partial reconstruction should also preserve sensible future options should recurrence, poor margins or another later problem make total breast reconstruction necessary.
A palpable lump is not always the entire disease extent. Imaging, biopsy findings and any associated calcification must be reconciled before deciding how much tissue to remove. A mismatch between examination, imaging and pathology calls for clarification rather than using a larger cosmetic rearrangement to conceal uncertainty. Multiple separated malignant areas, extensive disease or inability to achieve a suitable margin may make mastectomy the more appropriate operation. The discussion should explain the specific reason conservation may fail in that patient, allowing the person to distinguish cancer requirements from an individual surgeon's preferred technique.
Skin condition, previous irradiation, smoking, diabetes and other health problems influence healing and the consequences of bilateral surgery. Examine both breasts in a position that allows ptosis, size and nipple level to be assessed; record findings with consent when photographs will help planning. Anticipate the effect of subsequent radiotherapy on the treated breast before promising a lasting match. A complication in the contralateral breast can still interfere with the person's overall recovery and cancer treatment, even though no tumour was removed from that side. This is a reason to compare timing options, not automatically to deny symmetry surgery.
03Assessment before treatmentTests and checks that guide safe selection.
Read from the initial assessment onwards. Tests may run in parallel in urgent care; first-line, preferred, confirmatory, definitive and gold-standard labels appear only when the chapter explicitly states them.
- 01
Concordant imaging and tissue diagnosisFirst step - Why
- Define the malignant target and establish whether its extent permits the proposed conservation operation. Review mammography, ultrasound and biopsy together; add selected imaging only when it answers an unresolved extent question.
- Interpretation and limitations
- The team needs a defensible excision plan. A convenient mammoplasty pattern cannot replace missing information about a separate lesion or the full distribution of suspicious calcifications. Document how any additional finding changed the operation.
- 02
Localisation and specimen verification - Why
- Arrange image-guided localisation when needed, and ensure specimen imaging facilities are available for an image-defined target. Orient the specimen so the pathologist can identify which surface faces each retained area of breast.
- Interpretation and limitations
- Confirmation that the target is in the specimen is useful, but does not itself establish microscopically clear margins. If the image suggests that the intended target has not been removed, resolve that discrepancy before treating the cosmetic closure as completion of the cancer operation.
- 03
Final radial margin assessment - Why
- Check the actual pathology report for invasive cancer and DCIS at the radial margins, including the measured distance where neither reaches the inked surface. Distinguish these from an anterior skin or posterior fascial boundary.
- Interpretation and limitations
- NICE recommends offering further surgery when invasive cancer or DCIS is at a radial margin. Consider further surgery for invasive cancer more than 0 but less than 1 mm from a radial margin, and for pure DCIS more than 0 but less than 2 mm away, using the individual clinical factors and preferences.
- 04
Radiotherapy localisation handover - Why
- Record the original tumour position, the titanium clips placed in the tumour bed and the tissue movement performed, and share this information with the radiotherapy team. Agree the localisation method before the rearrangement.
- Interpretation and limitations
- A scar or postoperative hollow alone may misrepresent the original bed. The operative account and imaging should allow the oncologist to interpret the clips in context, distinguishing tumour-bed markers from clips used for other surgical purposes. Use the arrangement agreed with the local radiotherapy team and document where each set was placed.
04Treatment approachPreparation, options, escalation and aftercare.
01Worked caseTherapeutic mammoplasty in a ptotic breastFirst stepA woman with a large ptotic breast has a unifocal lower-pole cancer. Imaging and biopsy agree, conservation is appropriate, and she would welcome a smaller breast.+
- 1The team reviews the planned excision relative to the nipple-bearing tissue and confirms that a therapeutic mammoplasty can remove the cancer while retaining a viable reshaped breast. She chooses displacement after discussing simple excision, replacement and mastectomy alternatives.
- 2The surgeon performs the agreed excision, orients the specimen and places tumour-bed clips for the radiotherapy handover before completing the planned reshaping. This case uses a documented pedicle design compatible with the cancer location; the decision is not made from breast size alone.
- 3Final pathology confirms clear radial margins outside the close-margin thresholds. At the wound visit, the skin and nipple are viable and the incision is healing without an open area. The measured result is adequate excision and a healing breast, rather than a promise that future radiotherapy cannot change its shape.
- 4The multidisciplinary review confirms the adjuvant plan, and the operative localisation record accompanies the radiotherapy referral. She is satisfied with the reduced size and chooses to discuss the opposite breast after treatment rather than add another procedure immediately.
02Clinical caseA small breast needs volume replacementA patient has a lateral lesion whose planned excision would leave a visible hollow in a small breast. She wants to preserve her present breast volume.+
- 1After confirming the disease extent and conservation eligibility, the surgeon explains why moving the limited residual tissue would substantially alter the contour. A suitable lateral chest-wall perforator flap is assessed as a replacement option, with attention to donor tissue and future reconstruction possibilities.
- 2She selects partial volume replacement. The cancer specimen is oriented and checked; the recipient bed is clipped and the flap is inset according to the agreed plan. The team records the donor site and the changed relationship between the flap and original breast tissue.
- 3At review the flap remains viable and the excision margins are adequate. She reports donor-site tightness, which is assessed and incorporated into recovery advice. The reconstructed contour is acceptable to her, and oncology receives both the pathology and the cavity-localisation information before planning treatment.
03Clinical caseA close DCIS margin after rearrangementAfter oncoplastic conservation for pure DCIS, pathology shows no tumour on ink but a radial margin of 1.5 mm. The patient has not yet started radiotherapy.+
- 1The team recognises a close pure-DCIS margin that warrants consideration of further surgery under NICE. It reviews the extent of DCIS, which margin is involved, the original imaging, remaining breast tissue, the operative map and the woman's priorities; absence of tumour on ink does not automatically close the decision.
- 2The operating surgeon confirms that the relevant margin can still be identified for a targeted re-excision despite tissue rearrangement. The options, including the possible effect on shape and alternatives if adequate clearance cannot be achieved, are explained. The patient chooses re-excision after that individual assessment.
- 3The second specimen shows no residual DCIS and an adequate final margin. Her wound heals and the revised operative record is provided to oncology. This observed result supports completing her cancer treatment plan; it does not establish that every 1.5 mm margin requires the same operation.
05Complications, monitoring and follow-upAdverse effects, response and longer-term review.
- Assess postoperative perfusion, swelling, pain and wound integrity, including the nipple-bearing tissue and any partial flap. An enlarging tense breast, worsening skin colour or unexpected severe pain needs prompt surgical assessment rather than waiting for a scheduled cosmetic review.
- Close the pathology loop: verify the final diagnosis, radial margins and any additional findings, document the multidisciplinary decision and explain the result to the patient. A good early appearance cannot exclude residual disease at a microscopic margin.
- Track the practical readiness for adjuvant treatment. Record open wounds, infection, further operations and their effect on appointments, and coordinate with oncology when healing changes the intended sequence. A missed referral should not be mistaken for a deliberate treatment delay.
- At later review ask about breast shape, sensation, pain, donor symptoms and the effect on clothing or daily activities. Investigate a new focal lump or progressive change through the appropriate breast pathway rather than labelling every postoperative abnormality as fat necrosis.
06Special situationsVariants, exceptions and circumstances that change the usual approach.
Two meanings of size
The absolute tumour diameter and the proportion of useful breast tissue that must be removed answer different questions. A similar excision can be straightforward in one breast and deforming in another.
Pedicle and tumour relationship
A reduction pattern describes the surface design; it does not prove that the tissue keeping the nipple alive can be preserved around the proposed cancer excision. Planning must reconcile both objectives.
Margins survive the reshaping
Tissue rearrangement changes access for another operation but does not change the biological meaning of tumour at a radial margin. Preserve orientation and a useful operative map for the next decision.
Symmetry has a timetable
An immediate match may evolve during radiotherapy, healing and later weight change. Discuss whether the patient values fewer stages now or prefers to reassess the treated breast before an opposite-side procedure.
07Common pitfallsFrequent interpretation and management errors.
- 01
Choosing a named oncoplastic technique before resolving uncertain disease extent, then treating the planned shape as the main constraint on excision.
- 02
Confusing successful target retrieval on specimen imaging with a satisfactory final microscopic margin, or applying the invasive margin threshold to a pure DCIS specimen.
- 03
Leaving tumour-bed localisation and the explanation of tissue movement until after the patient reaches radiotherapy planning, when the surgeon's anatomical decisions may be difficult to reconstruct.
- 04
Dismissing a new lump as postoperative fat necrosis without assessing whether the clinical course, imaging and pathology are concordant.