lymphoma

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lymphoma,

a cancer of the tissue of the lymphatic systemlymphatic system
, network of vessels carrying lymph, or tissue-cleansing fluid, from the tissues into the veins of the circulatory system. The lymphatic system functions along with the circulatory system in absorbing nutrients from the small intestines.
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. There are two categories of lymphomas. One type is termed Hodgkin's diseaseHodgkin's disease,
a type of cancer of the lymphatic system. First identified in 1832 in England by Thomas Hodgkin, it is a type of malignant lymphoma. Incidence peaks in young adults and the elderly.
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, the other, non-Hodgkin's lymphoma (see lymphoma, non-Hodgkin'slymphoma, non-Hodgkin's,
any cancer of the lymphoid tissue (see lymphatic system) in which the Reed-Sternberg cells characteristic of Hodgkin's disease (the other category of lymphoma) are not present.
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). See also neoplasmneoplasm
or tumor,
tissue composed of cells that grow in an abnormal way. Normal tissue is growth-limited, i.e., cell reproduction is equal to cell death. Feedback controls limit cell division after a certain number of cells have developed, allowing for tissue repair
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.

lymphoma

[lim′fō·mə]
(medicine)
Any neoplasm, usually malignant, of the lymphoid tissues.
References in periodicals archive ?
(b) immunoblastic lymphomas (IBL) that, by convention, must contain at least 90% immunoblasts (which have single, central, prominent nucleoli); and (c) CD30+ LBCL with anaplastic features (or histology).
(1999) described immunoblastic lymphomas in MTBE-treated animals as progressing from reactive hyperplastic and dysplastic stages to various degrees of malignancy; however, it can be difficult to distinguish between lymphoid neoplastic and reactive changes in the lung when concurrent inflammatory infiltrates are present.
Immunohistochemical identification of P-glycoprotein in previously untreated diffuse large cell and immunoblastic lymphomas. Cancer Res 1992; 52: 3768-3775.
Subclassification of diffuse large B-cell lymphomas according to theKeil Classification: distinction of centroblastic and immunoblastic lymphomas is a significant prognostic risk factor.