my 20 year old caucasian son just informed me he thinks he should see a doctor. he apparently has had a hard non-growing lump in one of his testicles he felt he had for about 2 years. it is not painful unless he squeezes it. he did the test in the shower where you see if you feel a\difference and he saids it feels the same. testicular cancer is not in our families. he said it ALMOST looks like it could be a third testicle. any ideas? thank you-cindips. he is 5'11" 160 lbs with no previous health issues except seasonal asthma.