Hodgkin DiseaseLymphomaLymphoma, B-CellLymphoma, Non-HodgkinLymphoma, T-CellReed-Sternberg CellsLymphoma, Large B-Cell, DiffuseLymphoma, FollicularBurkitt LymphomaLymphoma, B-Cell, Marginal ZoneLymphoma, Large-Cell, AnaplasticLymphoma, Mantle-CellLymphoma, AIDS-RelatedLymphoma, T-Cell, CutaneousLymphoma, T-Cell, PeripheralAntigens, CD30VincristinePrednisoneRetrospective StudiesBleomycinHerpesvirus 4, HumanDoxorubicinEpstein-Barr Virus InfectionsPrognosisLymphoma, Large-Cell, ImmunoblasticAntigens, CD20Antineoplastic Combined Chemotherapy ProtocolsTreatment OutcomeAntibodies, Monoclonal, Murine-DerivedProcarbazineCyclophosphamideImmunohistochemistryTranslocation, GeneticImmunophenotypingVinblastineB-LymphocytesLymph NodesDacarbazineSurvival RateLymphoma, Extranodal NK-T-CellMediastinal NeoplasmsNeoplasm StagingCombined Modality TherapyRemission InductionRecurrenceSurvival AnalysisChromosomes, Human, Pair 14EtoposideDisease-Free SurvivalProto-Oncogene Proteins c-bcl-6Follow-Up StudiesFatal OutcomeGene RearrangementBiopsyTumor Markers, BiologicalChromosomes, Human, Pair 18MechlorethamineRisk FactorsAntibodies, MonoclonalCell Line, TumorNeoplasms, Second PrimaryPolymerase Chain ReactionAntineoplastic AgentsGerminal CenterLeukemia, Lymphocytic, Chronic, B-CellTransplantation, AutologousTomography, X-Ray ComputedTime FactorsSyndromeGene Expression Regulation, NeoplasticImmunoglobulin Heavy ChainsGene Rearrangement, B-Lymphocyte, Heavy ChainPhenotypeLymphoproliferative DisordersIn Situ Hybridization, FluorescenceMutationIncidenceCentral Nervous System NeoplasmsTumor Cells, CulturedThymus NeoplasmsSalvage TherapyGenes, ImmunoglobulinNose NeoplasmsDNA, NeoplasmCase-Control StudiesNeoplasm ProteinsLymphocytesEye NeoplasmsLeukemiaFlow CytometryGene Rearrangement, B-LymphocytePositron-Emission TomographyBase SequenceSkin NeoplasmsProspective StudiesAntigens, CDRadiotherapyViral Matrix ProteinsT-LymphocytesChromosome Aberrations