I am wondering if going with an implant that is 2 cm smaller than you measure is going to cause any issues?

Thanks for your question! It won't pose any issues per se, but you won't have as tight of cleavage or as much upper pole fullness with a more narrow implant. I've found that with cohesive moderate profile implants, we can get the correct width and hold the upper pole nicely. Maybe that is something to consider. Good luck!

I cannot think of any circumstances that going with a narrower implant than the chest wall will cause any particular problems. If you look at the different profile measurements, the difference in width is often extremely small. Probably the best way to proceed is to discuss carefully with your plastic surgeon your overall expectations and how to achieve this.

If implants are lacking the proper width, it may create a wider space between your breasts and reduce the upper pole fullness. Many factors enter in to selecting the right implant. This should be done with your surgeon who will have much more knowledge and experience in making these decisions and can guide you through the process.

Base width is one of the factors used when selecting an implant but there are other considerations. I encourage you to meet with a few board certified plastic surgeons near you for consultations to listen to varying opinions. I've also included a video that I hope you find helpful when selecting an implant.

Choosing an implant size/style is an important decision which is best made in concert with your surgeon. Ultimately, options are based on a number of factors including:
-Chest dimensions: This point is crucial as the width of your breasts defines the available "real estate" on which the foundation of your augmentation is built. This "foot print" is the absolute limit with which you are dealing. Too "large" is not so much the risk as too "wide." You cannot build a 3 acre mansion on a half acre plot. An implant which is too wide (exceeding the available space on your chest) will generally over hang laterally making it more noticeable and occasionally contributing to discomfort and nerve symptoms (numbness or tingling). This will also contribute to a more unnatural look.
-Tissue quality: This relates to size in the sense that the implant will be suspended by your tissue. Too large an implant may place took large a stress on these suspending tissues leading to healing problems in the short term and bottoming out in the long term.
-Patient desire (what is the look you are hoping to achieve?)
My role as a surgeon is to manage expectations and guide you towards a prudent choice which can satisfy these reasonable goals. Often times, a surgeon can guide a patient toward a size/cc range and patients will make determinations on implant style/profile. Patient seeking more or less projection, or seeking a more pronounced or subtle upper pole volume increase can be guided toward an implant which will help them best achieve their goals. Additionally, technique variations (sub muscular vs. sub glandular) can also aid in obtaining the look you desire.
There are a number of tools available to help guide patient/surgeon decision making including sizers, 3D imaging and goal photos. Each modality can help better communicate your goals to your surgeon and vice versa.
Ultimately, it is important to not marry oneself to a particular "cc" as oppose to a particular "look." Communication is key as you and your surgeon create your custom surgical plan.
With regards to your specific question, narrower implants are not as problematic as wider implants. However, they will under-deliver on upper pole fullness and medial fullness/cleavage.
As always, discuss your concerns with a board certified plastic surgeon.

Thank you for your question.The one who measures the breasts should be the surgeon instead of the patient.There are a lot of different types and sizes of implants in the market to meet different requirements of patients.If you have projected breasts high profile implants will not work for you.Recently most of the plastic surgeons tend to choose moderate to low profiles with smaller sizes. Higher projections and bigger sizes will cause more problems instead of others.Let your surgeon to choose the optimal implant according to your wishes.Best luck