Testicular cancer friend

My friend has just had his testicle removed , at Xmas it’s swelled up and was told it should go down and to come back in 8 weeks , anyway it didn’t and he’s only just told me today that he’s had his testicle removed , he doesn’t talk and keeps things to himself I’m worried sick of what happens next because he keeps it to himself , does removing the testicle mean it’s gone away , he’s the father of my son and we get on well so want to try support him