title: Marginal zone lymphoma.
abstract: Marginal zone lymphomas (MZLs) comprise 3 distinct entities: extranodal MZL of mucosa-associated lymphoid tissue (MALT), splenic MZL, and nodal MZL. Gastric MALT lymphoma is the most common extranodal MZL and often develops as a result of chronic Helicobacter pylori gastritis. Such cases frequently respond to antibiotics directed against H. pylori. Antigen-driven lymphomatous disease can also be seen in the association of Borrelia burgdorferi with MALT lymphoma of the skin, Chlamydia psittaci with MALT lymphoma of the ocular adnexa, Campylobacter jejuni with immunoproliferative disease of the small intestine, and hepatitis C with splenic MZL. This article discusses the pathogenesis and clinical features of MZL and the treatment options available to patients.
authors.affiliation: Division of Hematology, Department of Medicine, Keck School of Medicine, University of Southern California, Los Angeles, California 90033, USA.
authors.forename: Omid S
authors.initials: OS
authors.lastname: Shaye
authors.forename: Alexandra M
authors.initials: AM
authors.lastname: Levine
mesh_terms: D002908:Chronic Disease; D005756:Gastritis / Q000382:microbiology; D016481:Helicobacter Infections / Q000150:complications*; D016480:Helicobacter pylori; D006801:Humans; D008223:Lymphoma / Q000175:diagnosis* / Q000209:etiology / Q000628:therapy*; D018442:Lymphoma, B-Cell, Marginal Zone; D013160:Splenic Neoplasms; D013274:Stomach Neoplasms