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Aggressive NK-cell leukemia is a disease with an aggressive, systemic proliferation of natural killer cells (NK cells) and a rapidly declining clinical course. [ 1 ] [ 2 ] [ 3 ] It is also called aggressive NK-cell lymphoma .
Lymphoma with a histologic high grade generally respond better to treatment but have shorter survival times than dogs with low grade lymphoma. [6] Dogs with B-lymphocyte tumors have a longer survival time than T-lymphocyte tumors. [1] Mediastinal lymphoma has a poorer prognosis than other types, especially those with hypercalcemia. [12]
In immunology, immunoproliferative disorders are disorders of the immune system that are characterized by the abnormal proliferation of the primary cells of the immune system, which includes B cells, T cells and natural killer (NK) cells, or by the excessive production of immunoglobulins (also known as antibodies). [citation needed]
Dogs can develop a variety of cancers and most are very similar to those found in humans. Dogs can develop carcinomas of epithelial cells and organs, sarcomas of connective tissues and bones, and lymphomas or leukemias of the circulatory system. Selective breeding of dogs has led certain pure-bred breeds to be at high-risk for specific kinds of ...
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 ...
DLBCL is an aggressive type of B-cell NHL that grows rapidly in the lymph nodes and frequently involves the spleen, liver, bone marrow or other organs. 4 Although the disease can affect people of ...
Epstein–Barr virus–associated aggressive NK cell leukemia (EBV+ ANKL) is a rare NK cell malignancy that occurs most often in Asians and young to middle-aged adults. It sometimes evolves directly from other NK cell proliferative disorders such as, particularly in younger individuals, chronic active EBV infection (CAEBV). [1]
The T cell variations are usually caused by the prolonged use of T cell suppressant drugs, such as sirolimus, tacrolimus, or ciclosporin. [2] The Epstein-Barr virus , which infects >90% of the world population, is also a common cause of these disorders, being responsible for a wide range of non-malignant, pre-malignant, and malignant Epstein ...