The difference between 450 & 500 cc high definition implants?

There is actually very little difference between these two implants. If you're undecided I would probably go with the larger of the two.

There is little noticeable difference between a 450 cc and 500 cc high profile implant.  Normally the question as to whether 450 cc or 500 cc is better becomes an issue of fine-tuning your final result.  You should follow the recommendation of your surgeon in this regard.  It may be helpful for you to utilize external sizing implants so that you can visualize the difference 50 cc makes.  If the Vectra 3-D imaging is available to you it may help you to visualize the difference between the two.  Good luck.

The 50cc is a smal and not very noticeable difference. I tell my patients if they are worried they will be too small after surgery go with the bigger one and vice versa.