About the editorsFranco Cavalli is Director of the Institute of Oncology of Southern SwitzerlandBellinzona, SwitzerlandHarald St ein is Director of the Institut für Pathologie, Charité-Campus Benjamin Franklin,Berlin, GermanyEm anuele Zucca is Head of the Lymphoma Unit at the Institute of Oncology of SouthernSwitzerland, Bellinzona, Switzerland

• Part 1: Conceptual basis 1 Challenging issues in the management of extranodal lymphomas 2 Historical prospects for the concept of primary extranodal lymphoma 3 Epidemiology of primary extranodal lymphoma 4 Infectious etiopathogenesis of primary extranodal lymphoma 5 Lymphocyte homing and immunology of extranodal lympoid tissue 6 Specific management problems posed by the primary extranodal presentations. Part I – staging and response evaluation 7 Specific management problems posed by the primary extranodal presentations. Part I – local control of localized disease Part 2: Pathobiology and clinicopathological correlations 8 Pathobiology and molecular basis of MALT lymphoma 9 Principles of the WHO classification with special reference to aggressive extranodal lymphomas 10 MALT lymphoma pathology, initial diagnosis, and post-treatment evaluation Part 3: Main Entities/Locations 11 Primary central nervous system lymphoma 12 Primary testicular lymphoma 13 Intravascular large B-cell lymphoma 14 Nasal natural killer/T-cell lymphoma 15 Primary breast lymphoma 16 Bone lymphoma 17 Lung lymphoma 18 Primary mediastinal (thymic) large B-cell lymphomas 19 MALT-type lymphoma of the orbit and ocular adnexae 20 Primary marginal zone lymphomas and other non-MALT marginal zone lymphomas 21 Gastrointestinal tract lymphomas 22 Cutaneous lymphomas 23 Primary extranodal head and neck lymphomas 24 Lymphoma of the liver 25 Extranodal lymphomas in patients with HIV infection 26 Primary effusion lymphoma 27 Rare sites 28 Extranodal Hodgkin’s lymphoma