Journal
BEST PRACTICE & RESEARCH CLINICAL HAEMATOLOGY
Volume 30, Issue 1-2, Pages 139-148Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.beha.2016.07.004
Keywords
Splenic marginal zone lymphoma; Treatment; Rituximab; Splenectomy
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Splenic marginal zone lymphoma (SMZL) is a distinct lymphoma entity characterized by an indolent clinical course and prolonged survival. Treatment is not standardized, since there are no prospective randomized trials in large series of SMZL patients. Splenectomy and rituximab represent the most effective treatment strategies used so far. The addition of chemotherapy to rituximab has not further improved the outcome, although this issue requires further investigation. Rituximab monotherapy has been associated with high response rates (similar to 90%), with approximately half of these responses being complete, even at the molecular level. More importantly, many of these responses are long-lasting, with a reported 7-year progression-free survival (PFS) at the rate of 69%. Maintenance rituximab treatment has been associated with further improvement of the quality of response as well as longer response duration in studies derived from one group of investigators. Based on its high efficacy and the good safety profile, rituximab represent one of the best treatment options for SMZL patients. Moreover, rituximab retains its efficacy in the relapse setting in most cases. Splenectomy is a meaningful alternative to rituximab in patients with bulky splenomegaly and cytopenias, without extensive bone marrow infiltration, who are fit for surgery. However splenectomy cannot completely eradicate the disease and it is also associated with greater morbidity or even mortality compared to rituximab. The choice of one of these two treatment approaches (rituximab or splenectomy) should mainly be based on patient's characteristics and on the disease burden. Novel agents are currently testing in low grade lymphomas including a small number of SMZL patients with promising results. (C) 2016 Elsevier Ltd. All rights reserved.
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