Non-Hodgkin's lymphoma

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Non-Hodgkin's lymphoma

Non-Hodgkin's lymphomas are cancers of lymphoid tissue (lymph nodes, spleen, and other organs of the immune system).

Non-Hodgkin's lymphomas can be slow-growing (low-grade) or rapidly growing (high-grade) cancer. For most patients, the cause is unknown, but lymphomas may develop in people with suppressed immune systems as a result of organ transplantation, for instance.

The tumors are graded according to their level of malignancy (aggressiveness)-- low-grade, intermediate-grade or high-grade. Burkitt's tumor is an example of a high-grade lymphoma. Non-Hodgkin's tumors occur more frequently than Hodgkin's lymphoma.

Usually, non-Hodgkin's lymphomas affect people older than 50. High-risk groups include organ transplant recipients and immunosuppressed people. The incidence is 3 in 10,000 people.

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