after a mammogram 2 years ago, one implant has felt odd. I felt it immediately. What could have happened? still odd feeling.

Hello!  Thank you for your question!  It is very rare for a mammogram to have caused the actual rupture of your implant or caused enough trauma to change the pocket.  It is always wise to discuss with the technician that you do have implants, so that proper maneuvers will be taken to displace your implants for imaging of the breast.  That being said, although very rare, some things may have changed since your last mammogram and it is warranted to see your plastic surgeon for evaluation and examination.  Certainly rupture, capsular contracture, or other breast findings are possible and should be evaluated.  Good luck!

It is impossible to say that a mammogram has not altered the capsule around a breast implant with a breast implant itself. It is very very unlikely however. You should visit your surgeon.

Photos might help some.  It seems that your mammogram looked ok and your surgeon found nothing abnormal, so it would be hard to diagnose a problem over the internet without the benefit of an exam.It is possible that a mammogram could release a capsular contracture and make a firm implant feel softer. and a rupture of an implant is possible.  If saline, it would be obvious as the implant would deflate completely in almost all such cases.  If silicone, there might be a contour change. If this remains a problem, a second opinion from a plastic surgeon is in order. Thanks for your question, all the best. 

You may have a capsular contracture or it may be something completely different.  You did the right thing to see your surgeon.

Mammograms after breast augmentation are generally safe and easy to obtain. In general it is important to alert the mammography technician that you do have implants. They may have to do special views in order to complete the study. It is extremely unusual for complications to occur during the mammogram. However there have been reported cases in which implants have leaked or ruptured. Also there have been reported cases where the capsule surrounding the implant can break and cause malposition or change in the position of the implant. I always say, "listen to what the patient has to say". If you have noticed a change in your breast implants since the mammogram, chances are there really has been some change. An in person consultation with plastic surgeon who can examine you,may be able to help improve the situation.

Thanks so much for your question. It is possible to have an implant rupture from a mammogram. It is less likely in the first few years that you have the implant, but older implants become inherently weaker over time. An older/weaker implant is therefore more at risk than a newer/stronger implant.  The best way to evaluate your implant is with a physical examination and MRI. Additionally, the pocket around the implant could have been affected from the mammogram. Either way I would see a board certified plastic surgeon in your area specializing in breast revisions to be properly evaluated. 

From your description it may be possible that the compression  during the mammogram broke or put a tear in and a breast implant capsule.  This could explain the laxity and dropping of your breast after the procedure.In my opinion it is important to rule out a rupture of the implant.The best way to do this is to have a MRI to check if your breast implants are intact.