Splenic marginal zone lymphoma overview

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]

Overview

Splenic marginal zone lymphoma (SMZL) is a lymphoma comprised of B-cells that replace the normal architecture of the white pulp of the spleen. The neoplastic cells are both small lymphocytes and larger, transformed blasts, and they invade the mantle zone of splenic follicles and erode the marginal zone, ultimately invading the red pulp of the spleen. Frequently, the bone marrow and splenic hilar lymph nodes are involved along with the peripheral blood. The neoplastic cells circulating in the peripheral blood are termed villious lymphocytes due to their characteristic appearance.