To What Extent Can a Breast Asymmetry Be Evaluated As Normal?

My right breast is about a third or 150 ml smaller that the left one. The shape seems to be the same and the bigger one has a bigger basis and a bigger areola. Whereas I was ashamed of this fact in my earlier years I'm now feeling ashamed of my wish for a change. I know that a slight asymmetry is normal but is my difference still normal? I would like to have a reduction on the bigger side. Is the difference of about 150 ml big enough to expect a reasonable result?

Doctor Answers 12

Asymmetry is the rule rather than the exception

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Great question. You correctly pointed out that most women have some asymmetry in breast size and shape. With your questions you have identified two important issues in any woman's decision to have a breast procedure.

First, do you have reasonable goals? The answer to this question depends on the amount of asymmetry, how much it bothers you and if it is possible for a plastic surgeon to improve it. 150 mL of volume asymmetry would be obvious when you are nude. It would also present a significant challenge with clothing- bras would not fill out evenly and the asymmetry may be visible in clothing without some camouflaging. It is very reasonable to want to improve this. Further, it is realistic for a plastic surgeon to be able to improve this amount of asymmetry in most women.

Second, how do you approach feeling guilty about wanting to change something about yourself? Many of my patients share similar feelings with me. Only you can determine what is right for you, but in my experience, people find that improving symmetry through a procedure has a positive impact. Many patients who have previously been preoccupied with a feature that they do not like find that they move forward without worrying about it anymore. This can be liberating and allow them to be more productive and confident.

In summary, whether or not shape and volume asymmetry can and should be addressed with a procedure is very individualized. You would find it very helpful to meet with a board certified plastic surgeon to get individualized help. I wish you the best!


Michael Vennemeyer, MD

Breast asymmetry options

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Thank you for your question. Breast asymmetry is very common, particularly size asymmetry. If you are looking to decrease the asymmetry from one breast to another, then you have several options.
1) You can reduce the larger breast with liposuction or a traditional breast reduction technique
2) You can enlarge the smaller one with fat grafting or an implant
3) You can enlarge both but use different size implants
4) A lift procedure may also be needed to help address differences in shape and nipple / areolar size and position.
I would visit with a board certified plastic surgeon to discuss your options in more detail.

Mini Ultimate Breast Lift best alternative to achieve symmetry with least scar

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The goal of breast surgery is to produce beautiful breasts.  Beauty is determined by several factors including symmetry, skin tone, position of breast on the chest wall, position of areola, cleavage and volume.  Unfortunately, you have not provided any photographs but from your statement I can conclude that your left breast is approximately 450 cc's and your right breast is about 300 cc's.  You prefer to reduce the larger breast and this can be done through a circumareola approach.  Using this approach it is possible to resect the skin excess after you remove the breast tissue.  This is essential to maintain tight skin envelope.  The best way to achieve symmetry is to do both breast simultaneously.  I recommend a circumareola approach for both breasts to get the areolas to the identical size, reposition the breast tissue higher and increase cleavage and upper pole fullness.  There is a new technique called The Mini Ultimate Breast Lift, which can be done combined with liposuction, if needed, to reduce the sieze of your left breast.  This technique will leave the minimal scar, achieve the best symmetry, correct the uneven areolas and give you the result that you desire.

Best Wishes,

Gary Horndeski, M.D.

Only You Can Determine What's Normal

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Firstly, I'm glad to hear that you understand asymmetry is normal. Nobody has perfectly symmetrical breasts! However, it is unfortunate that you feel shame because you now want to resolve the issue. If you feel that this issue needs to be fixed, then there is no reason to feel shame. It is your body, after all, and it is your choice.

The difference in the size of your breasts can be easily remedied with breast reduction of the larger breast, as you stated is your preference. Another option is to augment the smaller breast with a breast implant.  A breast lift may also be recommended if you want them more "even". You can certainly expect a more than reasonable result.

I cannot tell you whether your asymmetry is "normal", because there is no "normal" rate of asymmetry. In my professional experience, I have seen asymmetry related to both size and shape varying from minor to severe. 150mL is a moderate amount of asymmetry.  To be honest, only you can determine what's "normal" and whether you'd like to do something about it.


Breast Asymmetry

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Although no one is exactly symmetric, a difference of the order that you describe is certainly noticeable, and it is perfectly rationale to consider treatment which is readily available.

From your description, and breast reduction of the larger breast seems to fit your goals. With a similar shape to the breasts, you should expect a nice outcome, trading some incisions and the resulting scars for better symmetry. By-in-large, the scars are quite acceptable, but do take an opportunity to look at photos of the scars following breast lifts or reductions as part of your decision. 

When you ready for an in person consultation, RealSelf has listings of surgeons in your area. You should consider cross referencing the listings from the The American Society of Plastic Surgeons (plasticsurgery dot org). A listing in the ASPS website assures you that your surgeon is not only board certified,  but also is a member in good standing of the major plastic surgery organization in the U. S.

Thank your for your question, best wishes.

Jourdan Gottlieb, MD
Seattle Plastic Surgeon

Breast Asymmetry

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If you indeed have that big of a difference then sure you can reduce one side or put a bigger implant on the other side. Without us seeing pictures you handicap us. I can't really give an opinion other than yes 150 is a big enough difference to make a visible difference. 

Braest asymmetry correction

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One breast that is 150cc larger with a larger areola can certainly be lifted in order to match the other side.  This is called a breast lift or mastopexy.  You should consult with board-certified plastic surgeons to find out what particular surgeries would work best for you.


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Hi Filumena,

The breast asymmentry you described can be corrected fairly easily.  You have many options available.  I would need photos and measurements in order to provide you with the  most reasonable choices.

Breast Asymmetry

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All women have breasts that are asymmetric. Consider your self as part of the normal and not different. However it is the percentage of difference between the two sides that can make this more significant and noticeable. Most women have a 5-10% volume difference. Also if your breast are smaller and these  volume differences become more significant. In general 150 grams of breast depending on the density of the breast corresponds to a significant and visible change in volume and size. 

Norman Bakshandeh, MD, FACS
New York Plastic Surgeon

How Much Breast Asymmetry is Normal.

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Thank you for your question regarding your concern about breast asymmetry. As you know, all women have some asymmetry of their breasts.  The question about whether or not your breast asymmetry is within the normal range might better be addressed - whether the difference is large enough to be of a concern to you. There are good surgical options available to you to make the breasts more symmetric than they are now.  Often a breast reduction on the side that is larger can provide an excellent result. A difference of 150 cc's should create a noticeable difference for you.  Please seek out a board certified plastic surgeon or two with extensive experience in breast surgery and one you are comfortable talking to before making your decision.  Wanting to improve the appearance of the breasts, whether due to size, sagging, or asymmetry are all very common concerns, so I encourage you to speak candidly with your surgeon about your goals.  Good luck to you.

These answers are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.