Neoplasms, Germ Cell and EmbryonalTesticular NeoplasmsGerminomaGerm CellsSeminomaEndodermal Sinus TumorDysgerminomaTeratomaGranulosa Cell TumorMediastinal NeoplasmsGiant Cell Tumor of BoneRetroperitoneal NeoplasmsGiant Cell TumorsCarcinoma, EmbryonalTestisSertoli Cell TumorGranular Cell Tumoralpha-FetoproteinsSpermatogenesisLeydig Cell TumorTumor Markers, BiologicalBleomycinCisplatinChoriocarcinomaEtoposideMesonephromaOvarian NeoplasmsRetroperitoneal SpaceImmunohistochemistrySeminiferous TubulesSpermatozoaNeoplasms, Multiple PrimaryIfosfamideAntineoplastic Combined Chemotherapy ProtocolsNeoplasms, Gonadal TissueSpermatogoniaOrchiectomySertoli-Leydig Cell TumorNeoplasmsGonadoblastomaSertoli CellsSalvage TherapyCombined Modality TherapyCell Line, TumorPancreatic NeoplasmsPinealomaTeratocarcinomaMixed Tumor, MalignantAdenoma, Islet CellNeoplasm Recurrence, LocalChromosomes, Human, Pair 12Neoplasm StagingNeoplasms, ExperimentalBone NeoplasmsPrognosisNeoplasms, Second PrimarySpermatocytesCryptorchidismBrain NeoplasmsDNA, NeoplasmNeoplasm ProteinsRetrospective StudiesCentral Nervous System NeoplasmsTumor Necrosis Factor-alphaNeoplasm MetastasisTumor BurdenSpermatidsTreatment OutcomeChorionic Gonadotropin, beta Subunit, HumanChorionic GonadotropinThoracic NeoplasmsDog DiseasesGonadsProto-Oncogene Proteins c-kitOctamer Transcription Factor-3Skin NeoplasmsGrowth Differentiation Factor 3RNA, MessengerAbdominal NeoplasmsCarboplatinGenes, Tumor SuppressorKidney NeoplasmsReverse Transcriptase Polymerase Chain ReactionOvaryAntigens, NeoplasmSacrococcygeal RegionWilms TumorTumor Suppressor Protein p53Seminiferous EpitheliumCarcinoma in SituCell DifferentiationNeuroectodermal Tumors, Primitive, PeripheralNeoplasms, Complex and MixedFatal OutcomeMolecular Sequence DataChlordanTomography, X-Ray ComputedLiver NeoplasmsLithiasisLymph Node Excision