there is no way to determine if any male has testicular cancer over the internet but i can tell you that testicular cancer is on or in the testicle not in the epididymis and it is very rare at age 13. you may have a small spermatocele but this would take an examination by your medical provider to be sure. all lumps that are concerning should be examined so i encourage you to do so.
i am 13 and i have a question about if i have testicle cancer i have a small lump on the top of my testicle? . the lump is squishy and is like the epididymus also i am a boy