Dr. I am 30, weigh 258, and 6'3". I had my testicles checked when I was 16 years old and the Dr did an ultrasound on them. At that time they identified one of my nerves larger than the other. I stopped worrying about it for a while. But now at the age of 30, both nerves feel like they're larger, and I mistake them for lumps at times. My grandfather and uncle on my moms side have testicular cancer, so I want to make sure I don't get it.