Advantages include avoiding an incision if there is no testicle to save. If we see this, we know something has happened to the testicle on its journey toward the scrotum. We then make a small incision on the scrotum to remove the usually pea-sized testicle, and fix the testicle on the other side to keep anything from happening to it. Another advantage is recognizing that the testicle is too far away from the scrotum to be safely brought down with one operation. Then, the blood vessels to the testicle are clipped with the scope and a second operation brings it the rest of the way down.
Prognosis is excellent, even if both testicles are involved.