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Non-Hodgkin Lymphoma and the Environment. Non-Hodgkin's lymphomas are a group of cancers that start in lymphoid tissue, also called lymph or lymphatic tissue. The causes of Non-Hodgkin lymphomas are mostly unknown. Specific viruses, immune deficiency, and specific autoimmune conditions have been implicated in increased risk. However, some environmental issues, including exposures to pesticides and solvents, are also being investigated.
This page links to information about possible environmental causes of childhood cancer and organizations that attempt to study environmental causes. Note that leukemia causes is in a separate section, linked to at the right. (Some childhood cancers, such as Wilms tumor and retinoblastoma, have a strong hereditary predilection. Genetic causes of childhood cancer are not in the scope of the links on this page.) 1  1/2002 Press Release on trends and causes: National Cancer Institute Research on Childhood Cancers.  SEER Program NCI's Surveillance, Epidemiology, and End Results (SEER) Program published in 1999.