IleumLymphomaLymphoma, B-CellLymphoma, Non-HodgkinLymphoma, T-CellLymphoma, Large B-Cell, DiffuseLymphoma, FollicularBurkitt LymphomaLymphoma, B-Cell, Marginal ZoneLymphoma, Mantle-CellLymphoma, T-Cell, CutaneousLymphoma, T-Cell, PeripheralLymphoma, AIDS-RelatedLymphoma, Large-Cell, AnaplasticHodgkin DiseaseLymphoma, Large-Cell, ImmunoblasticVincristineAntibodies, Monoclonal, Murine-DerivedPrednisoneAntigens, CD20Translocation, GeneticLymphoma, Extranodal NK-T-CellCyclophosphamideGuinea PigsDoxorubicinChromosomes, Human, Pair 14Antineoplastic Combined Chemotherapy ProtocolsAntigens, CD30B-LymphocytesHerpesvirus 4, HumanImmunophenotypingChromosomes, Human, Pair 18Ileal DiseasesImmunohistochemistryGene RearrangementProto-Oncogene Proteins c-bcl-6Lymph NodesMyenteric PlexusThymus NeoplasmsAntibodies, MonoclonalPrognosisCentral Nervous System NeoplasmsMuscle, SmoothReed-Sternberg CellsIleitisTreatment OutcomeIleal NeoplasmsIntestine, SmallEye NeoplasmsIntestinal MucosaLeukemia, Lymphocytic, Chronic, B-CellPseudolymphomaNose NeoplasmsFatal OutcomeEpstein-Barr Virus InfectionsMycosis FungoidesRemission InductionCombined Modality TherapyImmunoglobulin Heavy ChainsSkin NeoplasmsTransplantation, AutologousAntineoplastic AgentsRetrospective StudiesIntestinal NeoplasmsGerminal CenterBleomycinMuscle ContractionLeukemiaBiopsyPolymerase Chain ReactionSurvival AnalysisSurvival RateLymphoproliferative DisordersDNA, NeoplasmNeoplasm StagingEtoposideTumor Cells, CulturedIn Situ Hybridization, FluorescenceDisease-Free SurvivalCell Line, TumorMediastinal NeoplasmsTumor Markers, BiologicalGenes, ImmunoglobulinT-LymphocytesFlow CytometryGenes, mycRadioimmunotherapyProto-Oncogene Proteins c-bcl-2Leukemia, B-CellGenes, bcl-2Gene Expression Regulation, NeoplasticLeukemia L5178Enteropathy-Associated T-Cell LymphomaLeukemia-Lymphoma, Adult T-CellRecurrenceIleocecal ValveGene Rearrangement, B-LymphocyteComposite LymphomaIntestinal AbsorptionMethotrexate