title: Epidemiology and environmental aspects of marginal zone lymphomas.
abstract: Marginal zone lymphomas (MZLs) account for between 5% and 17% of all non-Hodgkin's lymphomas. MZLs consist of 3 different subtypes with extranodal being the most commonly reported, representing 50-70% of MZL, followed by splenic (20%) and nodal (10%). Median age at presentation varies between these lymphoma sub-types, ranging between 50 and 69 years, with an overall greater incidence noted in males compared to females. Given the rarity of these lymphomas, epidemiologic data has been sparse, although it has been suggested the aetiology is multi-factorial including ethnicity and geographical factors. Other reported associations include autoimmune disease and infection, with Helicobacter pylori and Campylobacter psittaci, being the most commonly reported pathogens. Larger population studies are required to investigate the role of these environmental factors further as these can direct the future management of these lymphomas, through the use of more effective targeted treatments.
authors.affiliation: Department of Haemato-Oncology, Royal Marsden Hospital NHS Foundation Trust, Downs Road, Sutton, UK; Division of Molecular Pathology, Institute of Cancer Research, 15 Cotswold Road, Sutton, UK. Electronic address: priya.sriskandarajah@icr.ac.uk.
authors.forename: Priya
authors.initials: P
authors.lastname: Sriskandarajah
authors.affiliation: Department of Haemato-Oncology, Royal Marsden Hospital NHS Foundation Trust, Downs Road, Sutton, UK. Electronic address: claire.dearden@rmh.nhs.uk.
authors.forename: Claire E
authors.initials: CE
authors.lastname: Dearden
mesh_terms: D017668:Age of Onset; D000368:Aged; D004781:Environmental Exposure / Q000009:adverse effects*; D016481:Helicobacter Infections / Q000453:epidemiology / Q000276:immunology; D016480:Helicobacter pylori / Q000276:immunology; D006801:Humans; D018442:Lymphoma, B-Cell, Marginal Zone / Q000453:epidemiology / Q000276:immunology / Q000382:microbiology; D008875:Middle Aged
keywords: Environmental; Epidemiology; Marginal zone lymphoma