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Mammograms and MRI after Breast Reconstruction – Are They Needed?

Comparison of Abdominal Recovery After SIEA, DIEP, TRAM Flap Breast Reconstruction PRMA Plastic Surgery

Author: Dr. Minas Chrysopoulo

“Do I still need to have mammograms after my breast reconstruction?” I’m asked this question quite often.

Surprisingly, there is no evidence-based consensus on this among breast cancer physicians. Recommendations range from “no need for any further mammograms” to “continued regular screening”.

Some doctors feel that since there is minimal natural breast tissue left behind after a mastectomy (it is impossible to remove all breast cells), there is no need to continue monitoring patients. Other surgeons decide on a patient-by-patient basis, including genetic predisposition (eg BRCA) and the type of reconstruction.

Though the risk is very low, breast cancer can return after a mastectomy. Breast reconstruction does not increase or decrease the risk of recurrence at all – the recurrence rate is the same whether women have reconstruction or not.

However, since the risk of breast cancer recurrence is a real one, I feel we need to continue some sort of monitoring once the reconstruction process is completed. This is especially the case in nipple-sparing mastectomy patients and patients who carry breast cancer associated gene mutations (eg BRCA).

Self breast exam is a no-brainer. It’s relatively easy to perform and it’s free.

For implant reconstruction patients it’s easier to feel changes in the skin against the underlying implant. Deep recurrences on the muscle (less common) are also theoretically easier to feel when the implant is placed under the muscle; the pectoralis muscle previously located under the breast tissue (ie at the “deep mastectomy margin”) is now displaced superficially and under the skin since it is pushed upwards by the implant placed beneath it.

For patients with silicone implants, the FDA recommends an MRI 3 years after the implants are placed followed by repeat MRIs every 2 years after that. This recommendation was provided when silicone im plants were re-introduced to the US market for cosmetic use as a means of checking implant integrity long-term. In the case of breast reconstruction, recurrent cancer is always going to be a more worrying concern for patients than documenting implant integrity. Ironically, when it comes to having the MRI covered by insurance, it is often easier to use the FDA recommendation as the underlying reason for having the test rather than trying to justify a screening test in a mastectomy patient with a benign clinical exam.

For women who are having an MRI to evaluate implant integrity, it is important to know an implant study is different to a “breast study” and does not detect cancer.

Generally speaking, I don’t personally feel routine MRIs are necessary but this approach is an option. While not as sensitive a test, ultrasound is a more cost effective alternative for screening, followed by MRI if the ultrasound shows something abnormal.

Patients who have had a flap reconstruction can also benefit from further imaging studies in addition to self exam.

The most commonly used breast imaging studies are mammograms and MRI. The appearance of a mammogram changes completely after autologous (flap) breast reconstruction. Even if the breast looks natural on the outside, the inside of the breast is completely different since the breast tissue has been replaced by fat (and sometimes muscle depending on the procedure) from another part of the body.

Some surgeons recommend flap patients have a one-off baseline mammogram, in essence a “flapogram”, after reconstruction just to get a new baseline. If the self breast exam reveals anything new of concern then the mammogram can be repeated, often in conjunction with an ultrasound for more information. Now the new mammogram can be compared to the baseline mammogram.

Another option is a one-off baseline MRI after breast reconstruction instead of a mammogram but this is a more expensive approach. MRIs are much more sensitive. Again, if self breast exam reveals a new area of concern in the future, the MRI can be repeated to see if anything has changed.

Some surgeons recommend continued screening mammograms after mastectomy and autologous (flap) breast reconstruction.

Flap reconstructions can develop areas of fat necrosis. This is fat in the reconstructed breast that becomes hard and creates a new mass which may or not be easily palpable on exam. A needle biopsy is often recommended to ensure the mass is benign and not a recurrence.

While the final recommendation on screening should be provided by the patient’s breast surgeon and medical oncologist, we feel that breast reconstruction patients should continue regular self-exams, especially if they have undergone a nipple-sparing mastectomy. For flap patients, a one-off baseline study once their reconstruction process is complete should also be considered. For some breast reconstruction patients, continued routine screening may be more prudent if their risk of future disease is high.

“Do I still need to have mammograms after my breast reconstruction?” I’m asked this question quite often.
Surprisingly, there is no evidence-based consensus on this amongst breast cancer physicians.

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8 Comment

  1. Terri

    This information is comprehensive and well written for the patient to understand. Thanks for the thorough explanation, Dr. C, and yes, it was very helpful. I can comfortably move forward with a plan of monitoring.

    1. PRMA Plastic Surgery

      Glad to hear Terri! If you ever have questions, you know where to ask!

  2. Maria

    Excellent article. It was well written and easy to understand. Most of all it answered all the questions I had on my mind in regards to getting a baseline mammogram vs. MRI after DIEP flap reconstruction with great detail.

    1. PRMA Plastic Surgery

      So glad you found this helpful Maria! Have a wonderful day!

  3. Laura

    Great article and answered my questions. I am 1 year post implant Reconstruction and my oncology clinic is recommending mammograms!? Unfortunately, I am not feeling great about the center since they did not seem able to answer my question regarding the need for mammograms

  4. Amy F Engel

    Last week, I had a mammogram and ultrasound to check out a lump I found. I was told the lump was most likely fat necrosis but a biopsy was done just to be sure because I am a carrier of the PALB2 gene mutation. The biopsy confirmed fat necrosis. It was a bit scary because fat necrosis can look and feel just like a tumor. Thanks for the article Dr C:)

  5. Laura M

    Thank you for the thorough explanation. I just had this discussion with a friend.

    1. PRMA Plastic Surgery

      Glad you found this information helpful!

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