<prompt> All of the following are true about cryptorchidism,except:Cryptorchidism is a risk factor for testicular tumorSeminoma is the most common tumorContalateral testis is also at riskOrchidopexy reduces the risk of malignancy  <response>: Predisposing factors for testicular GCTs areCryptorchidismTesticular feminization syndromeGCT of one testis is a risk factor for the other testisTesticular Ca in a siblingKlienfelter syndrome - is associated with mediastinal GCTAdministration of estrogens eg DES to the mother during pregnancy is associated with increased incidence of testicular Ca in male offspring.Some points are worth mentioning about cryptorchidismOf the predisposing factors, cryptorchidism has the strongest association with testicular Ca.Increased risk is seen for both the testis i.e. the cryptorchid testes as well as the normally descended testesAbdominal cryptorchid testes are at a higher risk than inguinal cryptorchid testes.Seminoma is the most common type of testicular cancer seen in a cryptorchid testesRemember this : Placement of the cryptorchid testis into the scrotum orchipexy does not alter its malignant potential, however it facilitates examination and tumor detection Note that Harrison 17e, p601 contradicts the above statement but we should follow what Campbell Smith say 