Information is only useful if it leads to action. Over the years, I’ve met many men who’ve known something was wrong but still didn’t seek help. Testicular cancer is rare, but occurs most commonly in men under 40. It’s always treatable, usually curable and if you get it early you may get to keep both testicles and be fully fertile. It starts as something the size of a grain of sand on the body of the testicle itself, which then grows to the size of a pea which is much easier to spot. You need to get used to the normal feel of the testicles –the lumpy bit at the back (the epididymis), extending up into what feels like a cord (the vas deferens) is entirely normal. But if you feel any new lumps and bumps in the testicle itself, go and see the doctor.