Lymphoproliferative DisordersEpstein-Barr Virus InfectionsHerpesvirus 4, HumanOrgan TransplantationKidney TransplantationTransplantationImmunosuppressive AgentsAutoimmune Lymphoproliferative SyndromeLeukemia, Hairy CellTransplantation, HomologousGiant Lymph Node HyperplasiaLymphoma, B-CellLymphomaB-LymphocytesLeukemia, Lymphocytic, Chronic, B-CellHematopoietic Stem Cell TransplantationPostoperative ComplicationsGraft SurvivalLymphomatoid PapulosisBone Marrow TransplantationHerpesviridae InfectionsGraft RejectionLeukemia, ProlymphocyticTransplantsAntigens, CD30LymphocytosisLymphoma, T-CellWaldenstrom MacroglobulinemiaImmunophenotypingLymphoma, T-Cell, CutaneousImmunocompromised HostLymphomatoid GranulomatosisPseudolymphomaLeukemia, B-CellImmunosuppressionAntibodies, Monoclonal, Murine-DerivedTreatment OutcomeLiver TransplantationRetrospective StudiesTime FactorsLymphoma, Non-HodgkinHistocompatibility TestingTissue DonorsGraft vs Host DiseaseTransplantation ConditioningCryoglobulinemiaHeart TransplantationFatal OutcomeHodgkin DiseaseT-LymphocytesLung TransplantationHematologic NeoplasmsAntigens, CD20Bipolar DisorderTransplantation, AutologousTumor Virus InfectionsMycosis FungoidesLeukemia, LymphoidImmunoblastic LymphadenopathyLymphatic DiseasesAntibodies, MonoclonalLymph NodesEpstein-Barr Virus Nuclear AntigensAntigens, CD5SplenomegalyMental DisordersFlow CytometryAntigens, CDAutoimmune DiseasesClone CellsAnxiety DisordersLeukemia, Large Granular LymphocyticBurkitt LymphomaMood DisordersLymphoma, Large B-Cell, DiffuseLymphocytesParaproteinemiasCladribineParaphimosisPolymerase Chain ReactionLeukemia, T-CellHerpesvirus 8, HumanLymphoma, Large-Cell, AnaplasticLymphoma, Mantle-CellSplenic NeoplasmsDNA, ViralViral Matrix ProteinsLeukemia, Prolymphocytic, T-CellInfectious MononucleosisBiopsyLymphocyte ActivationImmunologic Deficiency SyndromesRisk FactorsLeukemiaRecurrenceFollow-Up StudiesTacrolimusNeoplasms, Plasma CellDiagnostic and Statistical Manual of Mental DisordersAntilymphocyte Serum