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Ms. Penny Killeen - A woman that will never be forgotten in the eyes of the Maggio family. Thank you Penny for helping us with everything. Now that you've joined your son, you can rest now!
Causes of Cancer
Other Cancer Types
Lymphoma is a type of solid neoplasm that originates in lymphocytes (a type of white blood cell in the vertebrate immune system). This is in contrast to lymphoid leukemia, which is a malignancy of circulating cells.
There are many types of lymphoma. Lymphomas are part of the broad group of diseases called hematological neoplasms.
In the 19th and 20th centuries the affliction was called Hodgkin's Disease, as it was discovered by Thomas Hodgkin in 1832. Colloquially, lymphoma is broadly categorized as Hodgkin's lymphoma and non-Hodgkin lymphoma (all other types of lymphoma). Scientific classification of the types of lymphoma is more detailed.
Although older classifications referred to histiocytic lymphomas, these are recognized in newer classifications as of B, T or NK cell lineage. Histiocytic malignancies are rare and are classified as sarcomas.
According to the U.S. National Institutes of Health, lymphomas account for about five percent of all cases of cancer in the United States, and Hodgkin's lymphoma in particular accounts for less than one percent of all cases of cancer in the United States.
Because the whole system is part of the body's immune system, patients with a weakened immune system, such as from HIV infection or from certain drugs or medication, also have a higher incidence of lymphoma.
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