A physical examination typically reveals a firm lump (mass) in one of the testicles. When the health care provider holds a flashlight up to the scrotum, the light does not pass through the lump.
Other tests include:
Abdominal and pelvic CT scan
Blood tests for tumor markers: alpha fetoprotein (AFP), human chorionic gonadotrophin (beta HCG), and lactic dehydrogenase (LDH)
Chest x-ray
Ultrasound of the scrotum
An examination of the tissue is usually done after the entire testicle is surgically removed.