Breast & Chest · Reconstruction
SIEA flap breast reconstruction uses lower-abdominal skin and fat, supplied by superficial blood vessels, to rebuild a breast without cutting abdominal muscle.
What makes an SIEA flap different?
It uses blood vessels that run through the tissue above the abdominal muscles.
SIEA stands for superficial inferior epigastric artery. Unlike a DIEP flap, it generally avoids opening the abdominal muscle covering to harvest the flap.
Can anyone choose this flap?
No. The superficial vessels must be large enough and provide reliable blood flow.
Vessel imaging may help with planning, but suitability may only become clear during surgery. A backup reconstruction plan is important.
Is an implant needed?
An SIEA flap usually creates the breast mound using your own tissue.
Additional procedures may be discussed for volume, shape, symmetry or nipple reconstruction. Suitability depends on consultation with a microsurgical breast reconstruction surgeon.
01 · Overview
An SIEA flap moves skin and fat from the lower abdomen to the chest after mastectomy. The surgeon reconnects its artery and vein to blood vessels in the chest using microsurgery. The transferred tissue becomes the new breast mound. [1]
The main distinction is how the tissue receives its blood supply. An SIEA flap uses superficial vessels and leaves the abdominal muscle and its covering intact during flap harvest. A DIEP flap uses deeper vessels that require dissection through the muscle covering; a TRAM flap includes abdominal muscle. [1]
SIEA reconstruction can be considered at the time of mastectomy or later. Not everyone has suitable superficial vessels or enough abdominal tissue. Your surgeon will review your health, previous operations, treatment schedule and preferences before recommending an approach. [1]
No. Both involve the lower abdomen, but SIEA reconstruction transfers living tissue to the chest and reconnects its blood supply. The abdomen is a second surgical site, with its own scar, healing needs and risks.
Not necessarily. Avoiding muscle harvest can reduce some abdominal disruption, but this remains major surgery involving the breast, abdomen and delicate vessel connections. Recovery still requires support, monitoring and activity limits.
02 · Concerns & Goals
Reconstruction is a personal choice. Your goals, cancer treatment, abdominal anatomy and willingness to undergo recovery all help shape the plan.
You may want a breast shape after mastectomy without relying on an implant. Available abdominal tissue helps determine the volume that can be created.
Preserving abdominal muscle may be important to you. SIEA harvest also avoids opening its covering, but abdominal discomfort, wound problems and contour changes remain possible.
Reconstruction leaves scars on the breast and abdomen. The reconstructed breast may remain numb or feel different from your original breast.
Radiation, chemotherapy and the timing of mastectomy can affect the reconstruction plan. Your breast surgeon, oncology team and reconstructive surgeon should coordinate care.
03 · Options
These are planning choices within SIEA reconstruction, not interchangeable techniques. The final approach depends on your vessels, available tissue and cancer care.
The flap is transferred during the same operation as mastectomy.
The flap is transferred after mastectomy recovery or other treatment.
Abdominal tissue is used to rebuild one breast.
Abdominal tissue is divided to rebuild both breasts.
Agree on a backup plan before surgery. If the superficial vessels are inadequate, the surgeon may need to use a DIEP flap or another agreed reconstruction method. [1].
No. Imaging can help map vessels, but their size, quality and blood flow must also be assessed during surgery. Ask how that assessment may change your operation.
Yes, depending on what tissue remains after mastectomy. Nipple reconstruction or tattooing may be considered after the breast mound heals. These do not restore normal nipple sensation.
04 · Results
Your own tissue can create a soft breast mound, but it will not be identical to your original breast.
Appearance and sensation recover differently.
Reconstruction may involve more than one procedure.
Your expected result depends on your starting anatomy, mastectomy, radiation exposure, healing and the reconstruction that can safely be completed. [1]
05 · Recovery
Returning to work does not mean fully healed. Follow your surgeon’s instructions; strenuous activity requires clearance.
Recovery involves both the chest and abdomen. Your team should give you a personalized plan for wound care, drains, movement and follow-up; returning to work does not mean healing is complete.
Step 1 · Surgery and early monitoring
After general anesthesia, staff closely check the flap's blood flow and manage pain and nausea. You may have drains at the breast and abdomen.
Step 2 · Usually several days
Flap checks continue while the team helps you begin moving safely. Discharge depends on circulation checks, wound healing, mobility and your support at home.
Step 3 · First several weeks
Fatigue, swelling and tightness gradually improve. Follow your team's specific instructions for drains, dressings, bathing, garments and activity rather than a general recovery checklist.
Step 4 · Following weeks to months
Your surgeon will guide a gradual return to exercise and heavier tasks. Contours and scars continue changing, and any refinement procedures are planned after adequate healing.
Use your surgical team's milestones rather than a fixed calendar. Ask for written limits that reflect your job, home responsibilities and healing.
Possibly. Drains help remove fluid from surgical areas. Your team will explain care and decide when to remove them based on drainage and healing, not a universal date.
Feeling better does not mean the internal tissues have healed. Ask your team which movements are safe and when lifting, core exercise and strenuous activity can restart.
06 · Safety
Temporary swelling, bruising, soreness, abdominal tightness, fatigue and numbness are common. Symptoms should generally improve; new or worsening changes deserve a call to your team.
A clot or inadequate circulation can threaten the transferred tissue. Urgent surgery may be needed, and part or all of the flap can be lost.
Blood or fluid can collect in the breast or abdomen. Drainage, transfusion or another operation may be needed.
Incisions can become infected or open, and skin may heal poorly. Treatment may include medicines, wound care or surgery.
Areas of fat can lose blood supply and form firm lumps. These may need imaging, observation or treatment; uneven contours can also occur.
Persistent pain, numbness, scarring and abdominal contour changes are possible. Muscle preservation does not eliminate all risk of weakness, bulging or hernia.
Major surgery carries risks from anesthesia and clots in the legs or lungs. Your team will assess your risk and plan preventive measures.
Discuss these risks and your individual health history with your surgeon. [3]
07 · Costs
Compare written estimates for the same planned scope: one or both breasts, immediate or delayed reconstruction, the backup flap plan and any later stages. Ask your insurer about coverage, network status and authorization.
Surgeon
The reconstructive operation and the surgeons involved.
Ask your surgeonAsk whether mastectomy, balancing surgery, nipple reconstruction and later revisions are included or billed separately.
Facility
Anesthesia, operating room services, hospital stay and flap monitoring.
Ask your surgeonConfirm network status and how an extended stay or unplanned operation would be handled.
Supplies
Items such as dressings, garments, medicines and postoperative visits.
Ask your surgeonAsk which supplies, imaging, therapy and wound-care visits may create separate charges.
TRC
Any separately offered scheduling, education or care-coordination services.
Ask TRCAsk what services are offered, whether they are optional and whether any fee is separate from medical care.
Your written estimate should explain the services included, any separate charges, and payment terms.
08 · Questions
The superficial vessels needed for an SIEA flap may be too small or unreliable. A DIEP flap uses a different blood supply while also preserving abdominal muscle, although its harvest involves opening the muscle covering.
Possibly. Previous surgery can affect tissue and vessels. Bring your surgical history to consultation; examination and sometimes imaging help determine which options remain available.
Yes. Reconstruction does not replace cancer surveillance. Your oncology team will set follow-up based on your cancer history and any remaining breast tissue. Report new lumps or skin changes.
Yes. An aesthetic flat closure or an external prosthesis may better fit your preferences. Reconstruction is optional, and you can ask about delaying the decision.
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