Editing Lymphoma (section)

==Epidemiology==
[[File:Lymphomas, multiple myeloma world map-Deaths per million persons-WHO2012.svg|thumb|upright=1.3|Deaths from lymphomas and multiple myeloma per million persons in 2012 {{Div col|small=yes|colwidth=10em}}
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Lymphoma is the most common form of [[hematological malignancy]], or "blood cancer", in the developed world.

Taken together, lymphomas represent 5.3% of all cancers (excluding simple basal cell and squamous cell skin cancers) in the United States and 55.6% of all blood cancers.<ref>{{cite web |title       = SEER Cancer Statistics Review, 1975–2006 |work        = Surveillance Epidemiology and End Results (SEER) |publisher   = [[National Cancer Institute]] |url         = http://seer.cancer.gov/csr/1975_2006/ |vauthors    = Horner MJ, Ries LG, Krapcho M, Neyman N |location    = Bethesda, MD |access-date  = 3 November 2009 |quote       = Table 1.4: Age-Adjusted SEER Incidence and U.S. Death Rates and 5-Year Relative Survival Rates By Primary Cancer Site, Sex and Time Period |url-status     = live |archive-url  = https://web.archive.org/web/20090926004001/http://seer.cancer.gov/csr/1975_2006/ |archive-date = 26 September 2009 }}</ref>

According to the [[National Institutes of Health|U.S. National Institutes of Health]], lymphomas account for about 5%, and Hodgkin lymphoma in particular accounts for less than 1% of all cases of cancer in the United States.<ref>{{Cite web |title=Hodgkin Lymphoma |url=https://cancerstatisticscenter.cancer.org/types/hodgkin-lymphoma |access-date=2024-04-22 |website=American Cancer Society |language=en-US |archive-date=2024-04-22 |archive-url=https://web.archive.org/web/20240422145425/https://cancerstatisticscenter.cancer.org/types/hodgkin-lymphoma |url-status=live }}</ref>

Because the whole lymphatic system is part of the body's immune system, people with a weakened immune system such as from HIV infection or from certain drugs or medication also have a higher number of cases of lymphoma.<ref>{{cite journal | vauthors = Tran H, Nourse J, Hall S, Green M, Griffiths L, Gandhi MK | title = Immunodeficiency-associated lymphomas | journal = Blood Reviews | volume = 22 | issue = 5 | pages = 261–281 | date = September 2008 | pmid = 18456377 | doi = 10.1016/j.blre.2008.03.009 }}</ref>