<prompt> Which of the following predisposes to testicular germ cell tumors?Kleinfelter syndromeTesticular carcinoma in siblingCryptorchidismAll the above  <response>: Ans. is d i.e., All the above Predisposing factors for testicular Germ Cell Tumors are:a Cryptorchidismb Testicular feminization syndromec GCT of one testis is a risk factor for the other testisd Testicular Ca in a siblinge Klienfelter syndrome - is associated with mediastinal GCTf Administration of estrogens eg DES to the mother during pregnancy is associated with increased incidence of testicular Ca in male offspring. 