LymphomaHodgkin DiseaseLymphoma, B-CellLymphoma, Non-HodgkinLymphoma, T-CellLymphoma, Large B-Cell, DiffuseLymphoma, FollicularBurkitt LymphomaLymphoma, B-Cell, Marginal ZoneReed-Sternberg CellsLymphoma, Mantle-CellLymphoma, Large-Cell, AnaplasticLymphoma, T-Cell, CutaneousLymphoma, AIDS-RelatedLymphoma, T-Cell, PeripheralVincristineAntigens, CD30Lymphoma, Large-Cell, ImmunoblasticPrednisoneAntigens, CD20Antibodies, Monoclonal, Murine-DerivedDoxorubicinHerpesvirus 4, HumanChild WelfareAntineoplastic Combined Chemotherapy ProtocolsCyclophosphamideBleomycinTranslocation, GeneticEpstein-Barr Virus InfectionsTreatment OutcomeDisabled ChildrenChild BehaviorLymphoma, Extranodal NK-T-CellB-LymphocytesImmunophenotypingPrognosisRetrospective StudiesImmunohistochemistryProcarbazineLymph NodesChromosomes, Human, Pair 14Proto-Oncogene Proteins c-bcl-6Chromosomes, Human, Pair 18Gene RearrangementCombined Modality TherapyRemission InductionAntibodies, MonoclonalMediastinal NeoplasmsVinblastineSurvival RateEtoposideNeoplasm StagingFollow-Up StudiesTransplantation, AutologousCentral Nervous System NeoplasmsLeukemia, Lymphocytic, Chronic, B-CellDisease-Free SurvivalThymus NeoplasmsAntineoplastic AgentsRecurrenceSurvival AnalysisGerminal CenterFatal OutcomeRisk FactorsCell Line, TumorDacarbazineImmunoglobulin Heavy ChainsTumor Markers, BiologicalChild Health ServicesPolymerase Chain ReactionEye NeoplasmsChild RearingTumor Cells, CulturedLeukemiaTime FactorsLymphoproliferative DisordersMechlorethaminePseudolymphomaBiopsyNose NeoplasmsGene Expression Regulation, NeoplasticGene Rearrangement, B-Lymphocyte, Heavy ChainNeoplasms, Second PrimaryGenes, ImmunoglobulinChild, InstitutionalizedDNA, NeoplasmMycosis FungoidesSkin NeoplasmsIn Situ Hybridization, FluorescenceChild Behavior DisordersChild PsychologySalvage TherapyFlow CytometryCase-Control StudiesAge FactorsIncidenceGene Rearrangement, B-LymphocyteT-LymphocytesNeoplasm ProteinsChild of Impaired Parents