We don't totally understand why changes in altitude, whether going skiing in the mountains or flying on planes, should cause changes in breast implants physically, because we usually think of air filled cavities, like the lungs, sinuses, or middle ear spaces, as being more sensitive to pressure changes, at least within the ranges that most people inhabit on earth or in airplanes, and neither the implants nor the tissues have air in them. This happens very commonly though, and every year we have a few ladies call us or come in because they felt or heard something unusual in their breasts at altitude that went away when they returned to sea level. My own personal thought is that there probably is some gaseous, or other, component of the silicone rubber that can undergo very subtle changes with pressure, and this can be detected by some patients. We can also detect movement of the implants against tissue irregularities, and this can create vibrations that we feel or detect as sounds, like squeaking. In summary, what you are describing is very common, and in the absence of any other problems with your implants, and provided that everything returns to normal a lower elevations, this should be nothing to worry about. If, on the other hand, you do have a concern about your implants, it is always best to pay a quick visit to your surgeon so that he or she can personally evaluate you and make sure everything is OK. Good luck.
