Molecular Hematopathology. Reactive Lymphadenopathies. Classical Hodgkin's Disease. Nodular Lymphocyte Predominance Type of Hodgkin's Disease. Classification of Non-Hodgkin's Lymphoma. Low Grade B-Cell Neoplasms. Diffuse Aggressive Non-Hodgkin's Lymphomas. Peripheral T-Cell Lymphomas. Posttransplant Lymphoproliferative Disorders. Ki-L (CD30) Positive Large Cell Lymphoma. Histiocytic and Dendritic Cell Proliferations