[Current lymphoma classification: a step forward for pathologists and clinicians].

Non-Hodgkin lymphomas encompass a heterogeneous group of lymphoid malignancies from the clinical as well as from the pathological point of view. Consequently, one condition of optimal communication among pathologists, clinicians and scientific researchers is an adequate classification system. A new classification of lymphomas was proposed in September 1994, the Revised European-American Lymphoma Classification (REAL classification). The REAL classification is aiming at integration of pathological and clinical data, making it possible to distinguish clinical-pathological entities each of which has its characteristic pathological spectrum, clinical evolution and clinical presentation. The REAL classification is based not only on morphological and immunohistochemical but also on molecular and cytogenetic data. Such a system may make it possible to develop specific therapies for specific pathological entities. The REAL classification constitutes an important step forward in haemato-oncology.