500cc Breast Implants for 5'3" and 118 lbs

Hello,
There is a right and wrong answer here. Given your height and weight, it is hard to imagine that a 500 cc implant will be right for you. You will undoubtedly stretch the skin and thin out your existing breast tissue, and these changes may be irreversible. While you may be happy with larger implants in the short term, the results will not hold up over time. It is true that some women may not care about this, but I find that too be rare. A responsible surgeon will advise you based on your dimensions -- but the decision is yours.

Breast implants are designed to fit a womans body frame. The implants are designed according to dimensions. The larger the implant, the larger the circumference of the device. If a woman has a small chest, a large implant will cause lateral chest and axillary bulging. Since the breast sensory nerves are located laterall on the chest, there is a greater likelyhood of nerve injury if too large an implant is placed. Implants that are too large will cause more stretching of the breast over time and may ride high following the operation.
It is for all these reasons, that a responsible plastic surgeon will only place a dimensionally correct implant. As far as a 500cc implant for you, it seems too large, but only a dimensional analysis would give a correct answer.