He's having an ultrasound week after next to see if it's a hydrocele or a hernia but I'm just wondering if it is a hydrocele what do they do about it. It's been getting bigger for a couple of months but over the last couple of weeks it gets very big and then goes down again. I don't think it's going to be something he can live with, every time it gets even bigger than last time! I keep thinking it might "pop" if he bumps it while playing!