Splenic Marginal Zone Lymphoma In Bone Marrow:A Case Report And Review Of The Literature

Marginal zone lymphomas (MZL) are rare low-grade B lymphomas that originate from B lymphocytes in the marginal zone of the secondary lymphoid follicles. They comprise less than 1% of Nodular Hodgkin lymphomas (NHL). According to the World Health Organization’s classification, marginal zone lymphomas are divided into three groups: extranodal MALT lymphoma, splenic MZL (SMZL), and nodal MZL. All three groups have chromosomal, genetic, and immunophenotypic similarities. SMZL is a lymphoma that typically involves the bone marrow and hilar lymph nodes of the spleen. The spleen shows infiltration to peripheral blood and sometimes the liver, and usually occurs in the sixth decade of life. There is no standardized approach for treatment. Two-thirds of patients are asymptomatic during diagnosis, anda significant proportion of patients are successfully treated with a splenectomy.