During the 10 years since the last edition of Histopathology of Non-Hodgkins Lymphomas, based on the updated Kiel classification, our knowledge on malignant lymphomas, especially on extranodal lymphomas, has increased. This volume - Histopathology of Nodal and Extranodal Non-Hodgkins Lymphomas - is an expanded and completely revised edition, now based on the WHO classification. The parallels to the updated Kiel classification and the REAL classification are indicated. The information is organized in organ-specific chapters, comprising the well-known nodal lymphoma entities as well as all known extranodal lymphomas and the different organ-specific clinico-pathological entities: lymphomas of the spleen, the gastrointestinal tract, the skin, etc. In addition to the morphology, the major immunohistochemical, molecular genetic, and clinical data are included in each chapter.