Mixed Tumor, MalignantNeoplasms, Germ Cell and EmbryonalRetroperitoneal SpaceRetroperitoneal NeoplasmsTesticular NeoplasmsGerminomaRetroperitoneal FibrosisMixed Tumor, MesodermalGerm CellsNeoplasms, Complex and MixedSeminomaCA-125 AntigenAntigens, NeoplasmEndodermal Sinus TumorAdenoma, PleomorphicMammary Neoplasms, AnimalMyoepitheliomaDog DiseasesDysgerminomaTeratomaTumor Markers, BiologicalGranulosa Cell TumorOvarian NeoplasmsMediastinal NeoplasmsGiant Cell Tumor of BoneCarcinosarcomaMesenchymomaImmunohistochemistryGiant Cell TumorsCarcinoma, EmbryonalVaginal NeoplasmsAntigensTestisSalivary Gland NeoplasmsGranular Cell TumorAntigens, Tumor-Associated, CarbohydrateSertoli Cell TumorCell Line, TumorCarcinoembryonic AntigenCisplatinSubmandibular Gland Neoplasmsalpha-FetoproteinsBleomycinLeydig Cell TumorNeoplasm MetastasisEtoposideParotid NeoplasmsSpermatogenesisMucin-1AdenosarcomaTumor BurdenPrognosisNeoplasm StagingAntibodies, MonoclonalNeoplasmsTumor Necrosis Factor-alphaAntineoplastic Combined Chemotherapy ProtocolsDogsNeoplasm ProteinsChoriocarcinomaMesonephromaKeratinsCombined Modality TherapyAntigens, BacterialRNA, MessengerTomography, X-Ray ComputedProstateinCancer VaccinesTreatment OutcomeNeoplasm Recurrence, LocalRetrospective StudiesLymph Node ExcisionAntigens, SurfaceMixed Tumor, MullerianAdenocarcinomaOrchiectomyGenes, Tumor SuppressorMolecular Sequence DataNeoplasms, ExperimentalBrain NeoplasmsVimentinCarcinomaTumor Suppressor Protein p53Immunoenzyme TechniquesIfosfamideLiposarcomaLung NeoplasmsPeritoneumBreast NeoplasmsOssification, HeterotopicSeminiferous TubulesReverse Transcriptase Polymerase Chain ReactionSpermatozoaWilms TumorCA-19-9 AntigenSensitivity and SpecificityNeoplasms, Multiple PrimaryFollow-Up StudiesSarcomaSalvage Therapy