Mantle Cell Lymphoma Mimicking Mucosa-Associated Lymphoid Tissue (Malt) Lymphomas: A Pathological Characterization (On Behalf Of The "Fondazione Italiana Linfomi (Fil) Postgraduate Master Course")

INTRODUCTION: Mantle Cell Lymphoma (MCL) is considered an aggressive B-cell lymphoma, but with a heterogeneous outcome and a median overall survival ranging from 3 to 5 years (yrs). Two different subsets are recognized, known as “classical” and “leukemic non-nodal” subtypes. Unfrequently MCL presents with isolated extranodal localization mimicking mucosa-associated lymphoid tissue (MALT) lymphomas; a large series of European Mantle Cell Network has been recently reported (Morello et al, ICML 2017). On the other side, pathological features of this peculiar presentation are not yet clarified.