Sarcoma, KaposiSarcomaHerpesvirus 8, HumanSarcoma, EwingSarcoma, SynovialAvian Sarcoma VirusesSarcoma, ExperimentalSarcoma 180Sarcoma Viruses, MurineLymphoma, Primary EffusionSicilyGiant Lymph Node HyperplasiaHerpesviridae InfectionsSoft Tissue NeoplasmsSarcoma, AvianHistiocytic SarcomaSarcoma, MyeloidSarcoma, Endometrial StromalSarcoma, Clear CellAcquired Immunodeficiency SyndromeSarcoma, YoshidaKirsten murine sarcoma virusMoloney murine sarcoma virusSarcoma Viruses, FelineViral ProteinsHemangioendotheliomaLymphoma, AIDS-RelatedRous sarcoma virusSkin NeoplasmsBone NeoplasmsSarcoma, Alveolar Soft PartLeiomyosarcomaRNA-Binding Protein EWSOsteosarcomaDNA, ViralAlpharetrovirusChilblainsVirus LatencyCell Transformation, ViralProto-Oncogene Protein c-fli-1Harvey murine sarcoma virusAIDS-Related Opportunistic InfectionsHIV InfectionsAntigens, ViralGammaretrovirusRhabdomyosarcomaHistiocytoma, Malignant FibrousLiposarcomaImmunohistochemistryAntiretroviral Therapy, Highly ActiveNephrogenic Fibrosing DermopathyCell LineCell Transformation, NeoplasticCD4 Lymphocyte CountViral LoadOncogene Proteins, FusionSarcoma 37DoxorubicinNuclear ProteinsHIV SeronegativityHistiocytoma, Benign FibrousHerpesvirus 7, HumanBase SequenceVirus ReplicationPolymerase Chain ReactionIncidenceSarcoma, Small CellLangerhans Cell SarcomaVascular NeoplasmsRNA, ViralRetroperitoneal NeoplasmsChick EmbryoUgandaMolecular Sequence DataAntibodies, ViralTreatment OutcomeHIV SeropositivityIfosfamideDendritic Cell Sarcoma, FollicularBiopsyHelper VirusesKaposi Varicelliform EruptionLymphomaEndothelial CellsHemangiomaMuscle NeoplasmsAntineoplastic AgentsAvian leukosis virusSeroepidemiologic StudiesCell Line, TumorCells, CulturedInterferon Regulatory FactorsRetrospective StudiesItalyHemangiosarcomaImmune Reconstitution Inflammatory SyndromeAnti-HIV AgentsRetroviridaeGene Expression Regulation, ViralFibrosarcoma