The approach to the patient with synchronous bilateral germ cell tumors: a lesson in oncologic prioritization.

Cryptorchidism is the most well-defined risk factor for the development of testicular GCT; if uncorrected, the relative risk is 5 to 9 times that of healthy age-matched controls.[1] Approximately 10% of all cases of testicular GCT are associated with cryptorchidism and 10% of patients with cryptorchidism develop testicular GCT.[2,3] When testicular GCT develops in patients with unilateral cryptorchidism, the ipsilateral testis is affected in 80% to 90% of cases, but the contralateral testis can also be affected. Therefore, bilateral testicular GCT can also be observed in these patients, as illustrated by this case.