Another lymphoma classification

As our knowledge of non-Hodgkin lymphoma rapidly expands, we must either re vise our current classifications or develop new ones. Morphology provides t he most important basis for classifying lymphomas, but precise classificati on of some lymphomas requires that we include immunophenotype and genotype as well. In this review, we briefly analyze previous classifications and de scribe how new approaches-the Revised European-American Classification of l ymphoid Neoplasms and World Health Organization Classification-help us to u nderstand specific lymphoma entities.