Lymphoproliferative DisordersEpstein-Barr Virus InfectionsKidney TransplantationTransplantation, HomologousHerpesvirus 4, HumanOrgan TransplantationImmunosuppressive AgentsTransplantationGraft SurvivalHematopoietic Stem Cell TransplantationGraft RejectionBone Marrow TransplantationAutoimmune Lymphoproliferative SyndromePostoperative ComplicationsLeukemia, Hairy CellGiant Lymph Node HyperplasiaTransplantsHistocompatibility TestingLymphomaLymphoma, B-CellGraft vs Host DiseaseTransplantation ConditioningTissue DonorsB-LymphocytesTime FactorsRetrospective StudiesTreatment OutcomeLeukemia, Lymphocytic, Chronic, B-CellTransplantation, AutologousHematologic NeoplasmsLiver TransplantationHerpesviridae InfectionsLymphomatoid PapulosisLeukemia, ProlymphocyticAntigens, CD30ImmunosuppressionHeart TransplantationImmunocompromised HostLymphocytosisLymphoma, T-CellImmunophenotypingWaldenstrom MacroglobulinemiaLung TransplantationLymphoma, T-Cell, CutaneousLymphomatoid GranulomatosisPseudolymphomaAntibodies, Monoclonal, Murine-DerivedLeukemia, B-CellLymphoma, Non-HodgkinFatal OutcomeT-LymphocytesHodgkin DiseaseCryoglobulinemiaAntigens, CD20Bipolar DisorderTumor Virus InfectionsRecurrenceLeukemia, LymphoidMycosis FungoidesImmunoblastic LymphadenopathyAntibodies, MonoclonalLymphatic DiseasesAcute DiseaseLymph NodesCombined Modality TherapyEpstein-Barr Virus Nuclear AntigensAntigens, CD5SplenomegalyMental DisordersFlow CytometryAntigens, CDPolymerase Chain ReactionAutoimmune DiseasesLymphocytesTacrolimusClone CellsBurkitt LymphomaAnxiety DisordersCyclosporineLymphoma, Large B-Cell, DiffuseLeukemia, Large Granular LymphocyticMood DisordersParaproteinemiasCladribineParaphimosisBiopsyRisk FactorsLeukemia, T-CellHerpesvirus 8, HumanDNA, ViralLymphoma, Mantle-CellPost and Core TechniqueLymphoma, Large-Cell, AnaplasticSplenic NeoplasmsFollow-Up StudiesViral Matrix ProteinsLeukemia, Prolymphocytic, T-CellLeukemiaLymphocyte ActivationInfectious Mononucleosis