I'm not ceratin if a hydrocele can last 10 years, but if it was a cancerous tumor, it would have grown by now - so no big concern there. As for the pencil point lump on the other testicle, I have to say that is really small - I'm surprised you've even noticed it. Again, only way to find out is with an ultrasound so I hope the Doctor orders one for you - you need to see him as soon as possible. Let us know how it goes!