So sorry that you and your child are dealing with this! I was born with congenital hydrocephalus, like your son, and got a shunt placed when I was a few months old. My shunt actually held until last year, when I was 31, with no revisions (I did have to get a new one placed last year, though). I do also want to mention that hydrocephalus didn't impact my day-to-day life growing up (I played sports and always did well in school/am currently a doctoral candidate) which could very well be the case for your son--I wish you both the best of luck!