DysgerminomaTesticular NeoplasmsNeoplasms, Germ Cell and EmbryonalSeminomaGonadoblastomaTesticular DiseasesGerminomaGonadal Dysgenesis, 46,XYEndodermal Sinus TumorGerm CellsOvarian NeoplasmsTeratomaPregnancy Complications, NeoplasticGranulosa Cell TumorRetroperitoneal NeoplasmsMediastinal NeoplasmsGiant Cell Tumor of BoneCarcinoma, EmbryonalBleomycinCryptorchidismTestisCisplatinGiant Cell TumorsOrchiectomyEtoposideSertoli Cell TumorRetroperitoneal SpaceGranular Cell Tumoralpha-FetoproteinsTumor Markers, BiologicalSpermatogenesisChoriocarcinomaAntineoplastic Combined Chemotherapy ProtocolsLeydig Cell TumorNeoplasms, Multiple PrimaryNeoplasms, Second PrimaryNeoplasmsMesonephromaSpermatozoaCombined Modality TherapyLithiasisImmunohistochemistryNeoplasm StagingIfosfamideNeoplasm Metastasis