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Certain lymphomas (extranodal NK/T-cell lymphoma, nasal type and type II enteropathy-associated T-cell lymphoma) can be mimicked by two benign diseases that involve the excessive proliferation of nonmalignant NK cells in the GI tract, natural killer cell enteropathy, a disease wherein NK cell infiltrative lesions occur in the intestine, colon ...
Cutaneous lymphoma, also known as lymphoma cutis, is when lymphoma involves the skin. [1] It is characterized by a proliferation of lymphoid tissue. [2] There are two main classes of lymphomas that affect the skin: [citation needed] Cutaneous T-cell lymphoma; Cutaneous B-cell lymphoma
It is to be distinguished from two other primary cutaneous lymphomas that involve B-cells, primary cutaneous follicle center lymphoma (PCFCL) and primary cutaneous marginal zone lymphoma (PCMZL), [8] as well as from a B-cell lymphoma that at diagnosis may appear to be limited to the skin but often is a systemic disease affecting numerous organs ...
The myeloid cell line normally produces granulocytes, erythrocytes, thrombocytes, macrophages and mast cells; the lymphoid cell line produces B, T, NK and plasma cells. Lymphomas, lymphocytic leukemias, and myeloma are from the lymphoid line, while acute and chronic myelogenous leukemia, myelodysplastic syndromes and myeloproliferative diseases ...
It may be the site of lymphomas, usually a non-Hodgkin lymphoma. A specific entity is the marginal zone B-cell lymphoma (a subtype of which is termed MALT lymphoma). Certain subtypes of marginal zone B cell lymphomas such as those occurring in the stomach are commonly caused by Helicobacter pylori infection. [4]
T-cell lymphoma which develops from the lymph nodes commonly causes symptoms as such swollen lymph nodes. [7] The swelling normally will not cause any pain and can be felt or seen as lumps on the surface of the skin. Nodal T-cell lymphoma subtypes such as peripheral T-cell lymphoma will often develop this symptom. [citation needed]
The effects of these lymphomas on the skin typically progress with the disease. It is most common to experience patches or plaques on the skin. The initial sloughing of the skin in this lymphoma can be confused for nonthreatening inflammatory conditions due to the lack of cancer cells in the affected areas. [citation needed]
T-cell/histiocyte-rich large B-cell lymphoma (THRLBCL) is a DLBCL in which tumors containing small numbers of usually large neoplastic B-cells embedded in a background of reactive T-cells and histiocytes develop in the liver, spleen, bone marrow and/or, rarely other sites. Patients usually present with advanced disease; their overall 3 year ...
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