DuodenoscopyHodgkin DiseaseCrohn DiseaseReed-Sternberg CellsAntigens, CD30BleomycinProcarbazineVinblastineEpstein-Barr Virus InfectionsDacarbazineHerpesvirus 4, HumanLymphoma, Non-HodgkinDoxorubicinPrednisoneVincristineMechlorethamineLymphoma, Large-Cell, AnaplasticLymphomaLymphoma, Large B-Cell, DiffuseMediastinal NeoplasmsAntineoplastic Combined Chemotherapy ProtocolsLymphatic IrradiationNeoplasms, Second PrimaryLymphoma, B-CellImmunohistochemistryAntigens, CD20Lymph NodesOctamer Transcription Factor-2EtoposideGenes, relChemokine CCL17Viral Matrix ProteinsAntigens, CD15Gene Rearrangement, B-Lymphocyte, Heavy ChainNeoplasm StagingImmunophenotypingRadiotherapyB-Lymphocytes