A case of simultaneous bilateral nonseminomatous testicular tumors in persistent müllerian duct syndrome.

Persistent müllerian duct syndrome is characteristically associated with unilateral or bilateral cryptorchidism. Like other undescended testes, these gonads are at an increased risk of malignant transformation. We report a case of synchronous bilateral mixed germ cell tumors in the cryptorchid testes of a patient with the persistent müllerian duct syndrome.