If that form of cancer is of concern to either you or the physician you will be seeing (or have seen), then tumor marker tests such as carcino-embryonic antigen (CEA), alpha-feto protein (AFP), human growth hormone (HGH) human gorioinic gonadotropin (HCG) would be called for...usually after a testicular exam (palpation).......and confirmation (lab test: karytype and ones listed in prior post) of a diagnosis which indicates predisposition to such.
http://www.labtestsonline.org/unders.../glance-3.html
Fear of the unknown is worse than the known...regard the doctor visit as a plus.
Dana