Few causes have been found for testicular cancer that develops before puberty. Still, there are some risk factors.
These complex cases with ambiguous (uncertain) genitalia and other abnormalities may have an atypical testicle that puts them at risk for tumors known as gonadoblastomas and dysgerminomas.
A History of Undescended Testes
How the testicles descend into the scrotum during pregnancy
An undescended testicle is mainly found and treated in boyhood. So, these boys should do a testicular self-exam monthly.
Age and Race
Young men 15 to 34 years old are at risk for testicular cancer. This cancer is also more common in white than in black males.