I had a chin implant in 1981, could it have ruptured?

The nature of your neck mass may be elucidated with one of many imaging studies. Lipomas, or benign fatty tumors are particularly well suited for imaging if there may be a question regarding this diagnosis.Hope this is helpful for you.Dr. Joseph

Chin implants that are composed of silicone are solid and not fluid filled, like breast implants of the past.  So, there would be no leakage from a silicone chin implant.  

It's difficult to comment specifically on your inquiry without photos, but silicone chin implants do not leak.  Unlike silicone breast implants that are filled with gel, silicone chin implants are solid; however, over many years there can be bony remodeling/resorption of the chin/jaw bone which can certainly make the implant seem smaller.  I hope this helps.  Best of luck.

It is highly unlikely unless you were one of the few who had an old style liquid silicone filled chin implant. The best way to answer your concerns is to get 3D CT scan and look at the implant and the bone.

Some older style implants were fluid filled and this would be possible, but most likely the implant is settling into your bone and is hence less visible.  You should see and experienced surgeon who can perform CT scan to evaluate the implant and underlying bone and provide options.Joe Niamtu, III DMDCosmetic Facial SurgeryRichmond, Virginia

Typically, chin implants are made of a soft silicone which do not leak.  If you have a lump under your neck, see a surgeon or plastic surgeon for evaluation.