What does LAP mean?
Lumbar artery perforator.
These small blood vessels supply the lower-back skin and fat used to rebuild the breast.
Breast & Chest · Reconstruction
LAP Flap Breast Reconstruction
LAP flap breast reconstruction uses skin and fat from the lower back to rebuild a breast after mastectomy.
Does it use an implant?
It can rebuild a breast using your own tissue.
Whether enough tissue is available for your preferred size depends on your anatomy and whether one or both breasts need reconstruction.
How is it different from a DIEP flap?
LAP tissue comes from the lower back, not the abdomen.
Both use microsurgery to reconnect blood vessels. LAP reconstruction requires a team experienced with this less commonly performed flap.
01 · Overview
Understanding LAP flap reconstruction
A LAP flap transfers living skin and fat from the lower back to the chest. The surgeon shapes this tissue into a breast and reconnects its blood vessels under magnification. The back muscles are generally left in place, although the tissue removal creates a lower-back scar and changes that area's contour.
LAP reconstruction may be considered when abdominal tissue is unavailable, has already been used, or is not your preferred donor site. The flap's vessels can be short, so an additional blood-vessel graft may be needed. This can add complexity and another donor-site incision.
Breast reconstruction may begin at mastectomy or take place later. Radiation plans, healing, overall health, and your preferences influence the timing. Reconstruction restores a breast mound; it does not restore the original breast or guarantee normal sensation. [1]
- Tissue source
- Lower-back skin and fat
- Surgical approach
- Free flap with microsurgery
- Anesthesia
- General anesthesia
- Care setting
- Hospital surgery and inpatient monitoring
Is this the same as a back-muscle flap?
No. A latissimus dorsi flap uses muscle from the upper back and may be paired with an implant. A LAP flap uses lower-back skin and fat while generally preserving muscle, and its vessels must be reconnected at the chest.
Why might a blood-vessel graft be needed?
The LAP flap's vessels may not reach the chest vessels without added length. Your surgeon may use a segment of blood vessel from another area to bridge that distance. Ask where it would come from and what additional scar or risks it would involve.
02 · Concerns & Goals
What you may want to address
Choosing reconstruction involves more than breast shape. Your available tissue, cancer treatment, daily routines, and comfort with scars all matter.
A missing breast mound
You may want to restore shape after mastectomy so clothing or a bra fits more comfortably.
Limited abdominal tissue
A lower-back donor site may offer another option if an abdominal flap is unsuitable or has already been used.
Preference for your own tissue
You may prefer tissue-based reconstruction over an implant while recognizing that it involves longer surgery and a second healing area.
Balance and donor-site changes
Breast symmetry matters, but so do lower-back scars, contour changes, and how comfortably you can sit, sleep, and move during recovery.
03 · Options
How the approaches differ
These are planning choices within LAP reconstruction, not interchangeable techniques. Your surgeon will assess which are feasible for you.
Immediate LAP reconstruction
Reconstruction begins during the mastectomy operation.
How it worksThe microsurgical team transfers lower-back tissue after the breast tissue is removed.
May suitPeople whose cancer treatment plan, health, and surgical resources allow coordinated surgery.
Main tradeoffThe combined operation is lengthy, and later radiation may change the reconstructed breast.
Delayed LAP reconstruction
Reconstruction takes place after mastectomy and initial healing.
How it worksLower-back tissue is transferred in a separate operation, sometimes after other cancer treatment is complete.
May suitPeople who need or prefer more time before reconstruction.
Main tradeoffIt requires a separate major operation, and chest scarring or radiation effects may influence planning.
One-breast reconstruction
A LAP flap rebuilds one breast.
How it worksThe surgeon shapes the transferred tissue to work with the opposite breast.
May suitPeople having reconstruction on one side who have suitable lower-back tissue and vessels.
Main tradeoffMatching an existing breast can be difficult; surgery on the opposite breast may be discussed.
Two-breast reconstruction
Separate flaps rebuild both breasts.
How it worksTissue from both sides of the lower back may be used, with a separate blood supply established for each breast.
May suitPeople needing bilateral reconstruction who have enough suitable tissue and can tolerate the planned surgery.
Main tradeoffSurgery and recovery are more extensive, and treatment may need to be staged.
Timing and the number of breasts being reconstructed are only part of the decision. Donor tissue, blood vessels, prior surgery, and cancer treatment also guide the plan. [1] [2].
Can LAP reconstruction follow implant removal?
Sometimes. A surgeon can assess whether lower-back tissue can replace an implant-based reconstruction. Prior infection, radiation, chest scarring, and available recipient vessels affect whether this is suitable.
Will I need more than one operation?
You may. Later procedures can refine shape, address donor-site contour, or reconstruct a nipple. Fat grafting may help selected contour differences but has its own risks and may require multiple sessions.
04 · Results
What may improve and what may remain
Breast shape and feel
Your own tissue can create a breast mound, but it will not exactly reproduce the original breast.
- Size depends on the amount of usable lower-back tissue.
- The reconstructed breast may change with weight changes and aging.
- Sensation is often reduced and may remain limited.
Lower-back appearance
The donor area becomes smaller and develops a permanent scar.
- Scar position and length depend on the tissue needed and your anatomy.
- Uneven contours, indentation, or differences between sides can occur.
- Ask how the planned scar may sit beneath your usual clothing.
A gradual result
Shape settles over months rather than at hospital discharge.
- Early swelling can obscure the breast and donor-site contours.
- Scars soften and fade over time but do not disappear.
- Further surgery may be offered for shape or symmetry, without a guarantee of a particular result.
Reconstruction can improve shape and balance, but differences in appearance and sensation are expected. Your surgeon can explain what is realistic for your circumstances. [1]
05 · Recovery
Planning your recovery
Recovery at a glance
- Stay after surgery
- Determined by Your Surgeon
- Initial recovery at home
- Varies by Individual
- Return to desk work
- Varies by Procedure and Work Activity
- Light daily activities
- Based on Individual Recovery
- Strenuous exercise
- Based on Surgeon Clearance
Returning to work does not mean fully healed. Follow your surgeon’s instructions; strenuous activity requires clearance.
Recovery involves both the chest and lower back, plus any vessel-graft donor site. The pace depends on the operation's extent, your health, and how each area heals.
Step 1 · Surgery and early monitoring
Treatment day
After general anesthesia, the team monitors the flap's circulation closely. You may have drains, dressings, and monitoring equipment, with help for pain control and movement.
Step 2 · The first several days
Hospital recovery
Staff continue circulation checks and help you gradually move around. Discharge depends on flap stability, comfort, mobility, and a workable care plan at home.
Step 3 · The following weeks
Healing at home
Fatigue, tightness, and swelling usually ease gradually. Your team sets wound care, drain care, positioning, and activity limits based on your surgery.
Step 4 · Over the following months
Settling and rebuilding stamina
Activity increases as healing allows. Breast shape, donor-site swelling, and scars continue to change, and any refinements are discussed after tissues have settled.
Planning everyday activities
ActivityGeneral planning contextWhat affects the plan
Desk workPlanning context: Often requires several weeks away, sometimes longer.What affects it: Fatigue, sitting comfort, commuting, and complications can delay return. Returning to work does not mean healing is complete.
DrivingPlanning context: Resume only when your surgical team clears you.What affects it: You need to be off impairing medicines and able to turn, wear a seat belt, and brake safely.
Lifting and exercisePlanning context: Progress according to your team's restrictions. [3]What affects it: Chest and lower-back incisions need protection; strenuous work and exercise may require a longer pause.
Sleeping and sittingPlanning context: Ask for a positioning plan before discharge.What affects it: Pressure on the reconstructed breast or lower-back incision may need to be limited while wounds and blood vessels heal.
These are planning considerations, not personal clearance. Follow your surgical team's instructions for your specific flap and donor sites.
Before your procedure
- Share your mastectomy, radiation, chemotherapy, and previous reconstruction history.
- Review whether vessel imaging is needed to assess the lower back and chest.
- Discuss all medicines, supplements, nicotine use, and any changes your team recommends.
- Arrange transportation, household help, and support with children or other dependents.
- Ask how to prepare your home for comfortable movement and any prescribed positioning.
- Confirm follow-up arrangements and how to reach the microsurgical team day or night.
Will I go home with drains?
You may have drains at the breast, lower back, or another donor site. Your team will explain how to manage them and when they can be removed based on drainage and healing, rather than a fixed date.
What if I live far from the surgical hospital?
Ask whether you should stay nearby after discharge and for how long. Early flap concerns can require urgent assessment by a microsurgical team, so travel and follow-up need advance planning.
06 · Safety
Risks and what your clinician assesses
Early soreness, swelling, bruising, fatigue, tightness, and numbness can occur at the breast and donor sites. Symptoms should generally improve; sudden changes or worsening symptoms need prompt assessment.
Blood-flow problems or flap loss
A clot or other circulation problem can threaten the transferred tissue. Urgent surgery may be needed, and part or all of the flap can be lost.
Bleeding or fluid collection
Blood or fluid may collect beneath the skin at the breast or donor sites. Drainage, transfusion, or another procedure may be necessary.
Infection or delayed healing
Wounds may become infected, open, or heal slowly. Treatment can include medication, wound care, or further surgery.
Fat necrosis and contour changes
Areas of transferred fat can become firm or form lumps when their blood supply is insufficient. Examination, imaging, or treatment may be needed.
Lasting donor-site or breast symptoms
Scars, numbness, persistent pain, asymmetry, or lower-back contour changes may remain. A vessel-graft donor site adds its own scar and healing risks.
Anesthesia and blood-clot complications
Major surgery carries risks including reactions to anesthesia and clots in the legs or lungs. Your team assesses your risk and plans preventive care.
Discuss these risks and your individual health history with your surgeon. [2]
What your clinician assesses
- Lower-back tissue volume, skin quality, blood vessels, and previous scars
- Chest tissue condition, recipient vessels, and radiation plans
- Heart and lung health, diabetes, clotting history, and nicotine exposure
- Ability to tolerate lengthy surgery, recover safely, and attend follow-up
07 · Costs
What makes up the Total Procedure & Care Cost
Compare written estimates for the same planned scope: one or both breasts, immediate or delayed reconstruction, any vessel graft, and anticipated later stages. Insurance coverage and out-of-pocket costs depend on your plan and care team.
Surgeon
Surgical care
Surgeon and microsurgical services for flap transfer, breast shaping, and donor-site closure.
Ask your surgeonAsk whether vessel grafting, additional surgeons, opposite-breast procedures, and later revisions are included.
Facility
Anesthesia and facility
Anesthesia, operating-room services, hospital stay, and flap monitoring.
Ask your surgeonConfirm network status and how additional hospital days or unplanned surgery would be billed.
Supplies
Supplies and follow-up
Items such as dressings, prescribed garments, medicines, imaging, and follow-up visits.
Ask your surgeonAsk which items are separate and whether rehabilitation or local follow-up requires additional authorization.
TRC
Patient Services
Any separately listed care-coordination or administrative services.
Ask TRCAsk what services are offered, whether they carry a charge, and whether insurance covers them.
Your written estimate should explain the services included, any separate charges, and payment terms.
08 · Questions
Common questions
Is LAP reconstruction right for everyone?
No. It requires suitable lower-back tissue and vessels, acceptable surgical risk, and an experienced microsurgical team. A consultation is needed to compare it with other options.
Will my back muscles be removed?
LAP reconstruction is designed to transfer skin and fat while preserving the back muscles. That does not eliminate donor-site pain, wound problems, or contour changes.
Can it be done after radiation?
It may be possible. Radiation affects chest skin and tissue quality, so the surgeon and cancer team must coordinate timing and assess the vessels available for reconstruction.
Does the flap include a nipple?
No. If your nipple cannot be preserved during mastectomy, nipple reconstruction or tattooing may be discussed later. These are separate choices and do not restore normal nipple sensation.
0 consultation questions in your plan
View in My TRC workspaceMy Aesthetic Plan
Prepare for your consultation
Bring these to help your consultation:
- Understand why LAP is being considered and what alternatives are available.
- Have a written recovery, follow-up, and urgent-contact plan.
- Review the planned stages, insurance authorization, and itemized estimate.
View My Aesthetic Plan
Choices stay in this visit until saving to your account completes. Nothing is sent to a clinician.
Sources
- [1]American Society of Plastic Surgeons: Breast ReconstructionGeneral reconstruction goals, implant and tissue-based options, timing considerations, limits of symmetry and sensation, and possible later procedures.
- [2]American Society of Plastic Surgeons: Breast Reconstruction Risks and SafetyGeneral breast reconstruction risks including bleeding, infection, poor healing, flap loss, fat necrosis, anesthesia complications, and blood clots; not LAP-specific risk rates.
- [3]American Society of Plastic Surgeons: Breast Reconstruction RecoveryIndividualized postoperative instructions, dressings and drains, activity guidance, follow-up, and seeking urgent care for symptoms such as shortness of breath or chest pain.
Photographs are illustrative scenes, not patients, staff, facilities or outcomes. This information does not replace a personal assessment by your treating clinician.