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, CD30VincristinePrednisoneBleomycinHerpesvirus 4, HumanRetrospective StudiesDoxorubicinEpstein-Barr Virus InfectionsLymphoma, Large-Cell, ImmunoblasticAntigens, CD20PrognosisAntineoplastic Combined Chemotherapy ProtocolsTreatment OutcomeProcarbazineAntibodies, Monoclonal, Murine-DerivedDelayed DiagnosisImmunohistochemistrySensitivity and SpecificityCyclophosphamidePrenatal DiagnosisEarly DiagnosisVinblastineImmunophenotypingTranslocation, GeneticLymph NodesB-LymphocytesBiopsyNeoplasm StagingMediastinal NeoplasmsDacarbazineFatal OutcomeSurvival RatePolymerase Chain ReactionTumor Markers, BiologicalCombined Modality TherapyFollow-Up StudiesTomography, X-Ray ComputedLymphoma, Extranodal NK-T-CellRemission InductionTime FactorsRecurrenceRisk FactorsSurvival AnalysisProto-Oncogene Proteins c-bcl-6EtoposideAntibodies, MonoclonalNeoplasms, Second PrimaryDisease-Free SurvivalChromosomes, Human, Pair 14DiagnosisGene RearrangementMechlorethamineTransplantation, AutologousCell Line, TumorAntineoplastic AgentsChromosomes, Human, Pair 18Germinal CenterIncidenceLeukemia, Lymphocytic, Chronic, B-CellPredictive Value of TestsProspective StudiesGene Expression Regulation, NeoplasticGene Rearrangement, B-Lymphocyte, Heavy ChainCase-Control StudiesImmunoglobulin Heavy ChainsPositron-Emission TomographyTumor Cells, CulturedCentral Nervous System NeoplasmsIn Situ Hybridization, FluorescenceLymphoproliferative DisordersThymus NeoplasmsSalvage TherapyDiagnostic ErrorsSkin NeoplasmsDNA, NeoplasmGenes, ImmunoglobulinCohort StudiesFlow CytometryEye NeoplasmsNeoplasm ProteinsReproducibility of ResultsLeukemiaNeoplasmsGene Rearrangement, B-LymphocyteLymphocytes