When a man has had a testicle removed, it can be aesthetically embarrassing for him, even if it doesn't pose any kind of medical problem. The other testicle takes control of hormones and spermatozoïds.
What's involved?
The surgeon replaces the missing testicle with an artificial silicone one. It's very simple. There are several sizes available so that symmetry can be maintained.
Results
They're excellent and no-one would ever know it was a replacement!