Mantle cell lymphoma accounts for 5-10% of all non-Hodgkin's lymphomas and it has one the worst prognosis among all lymphomas. There is no therapy that can be considered as standard. Mantle cell lymphoma can show different "architectural" patterns as well different morphologic variants. Mantle cell lymphoma is believed to derive from marginal zone or peripheral blood memory B-cells. The immunophenotype of the neoplastic cells reflect the phenotype of a mature B-cell, even if mantle cell lymphoma cells are typically CD5+ and CD23-. Mantle cell lymphoma is characterized by the deregulated expression of cyclins D, mainly of cyclin D1, which is targeted by the t(11;14)(q13;q32) chromosomal translocation, the genetic hallmark of the disease. In this review will summarize the main morphologic and immunophenotypic features of the neoplastic cells, and the genetics and biology underlying the disease. (c) 2007 Elsevier Ltd. All rights reserved.
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