Plasma CellsBiopsyLeukemia, Plasma CellNeoplasms, Plasma CellBiopsy, NeedlePlasmaMultiple MyelomaParaproteinemiasGranuloma, Plasma CellPlasmacytomaB-LymphocytesSyndecan-1Bone MarrowMonoclonal Gammopathy of Undetermined SignificanceImmunoglobulin AImmunoglobulin GImmunoglobulinsGerminal CenterCell MembraneAmyloidosisImage-Guided BiopsyImmunoglobulin MB-Lymphocyte SubsetsCell DifferentiationPlasma Cell Granuloma, PulmonaryImmunohistochemistryPlasma GasesPalatine TonsilBiopsy, Large-Core NeedleImmunoglobulin Light ChainsTime FactorsFlow CytometryBiopsy, Fine-NeedleImmunoglobulin lambda-ChainsSyndecansBone Marrow CellsLymph NodesBence Jones ProteinBiological MarkersImmunophenotypingAntigens, CD19Antigens, CD38Immunoglobulin kappa-ChainsPlasma VolumeAntigens, CDBone Marrow ExaminationHypergammaglobulinemiaSpleenAntigens, CD20Immunoglobulin Heavy ChainsADP-ribosyl CyclaseMyeloma ProteinsReceptors, Antigen, B-CellB-Cell-Specific Activator ProteinPlasma ExchangeKidneyCells, CulturedImmunoglobulin J-ChainsAntibody FormationSensitivity and SpecificityLymphocytesAntibodies, MonoclonalWaldenstrom MacroglobulinemiaMice, Inbred C57BLSentinel Lymph Node BiopsyTumor Necrosis Factor Ligand Superfamily Member 13Antibody-Producing CellsMembrane GlycoproteinsInterleukin-6Immunoglobulin alpha-ChainsPOEMS SyndromeMicroscopy, ElectronParaproteinsMolecular Sequence DataImmunologic MemoryPrognosisImmunoglobulin gamma-ChainsIntestinal MucosaLiverReceptors, CCR10Immunoenzyme TechniquesRNA, MessengerImmunoglobulin Class SwitchingPyrazinesFluorescent Antibody TechniqueLymphoid TissueRetrospective StudiesLymphomaBoronic AcidsDuodenumEnzyme-Linked Immunosorbent AssayAntigens, CD27Giant Lymph Node Hyperplasiagamma-GlobulinsCell LineMelphalanLymphatic DiseasesGenes, ImmunoglobulinReverse Transcriptase Polymerase Chain ReactionLymphoma, B-Cell