possible yes. tell him to go see a doctor. had the same thing. and just went and seen one today. told me it was just an increased blood flow in the testicle, nothing to worry about. to forget about it. made me feel 5000 pounds lighter. id suggest he does the same. if hes shy about going to see a doctor. remind him that, that doctor has seen more of that area then he can ever imagine. and he doesnt care one bit. least of his worries. goodluck to him!
and also if it turns out to be cancer. testicular cancer caught early can have a 95-100% cure rate. and even at its worse stage. its a 85% cure rate. one of the highest out there. goodluck again to you both :)
how old his he number one ? and has he ever thought about a sonogram totaly painless could be a number of things cyst are comon i have a small one and its painless well worth getting it checked out to rule out anything that could end up being harmfull testicle cancer is treatable when cought early
let me know how its goes i dont know how your hubby feels about this but i was scared and nervous and ready to find out what it was hope you can convince him to go to dr