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Histology of a normal lymphoid follicle, with marginal zone annotated at bottom.. Numerous factors appear to be involved in the development of EMZL. In a small number of cases where there is a family history of a blood cancer particularly leukemia, or a number of autoimmune diseases such as Sjögren syndrome and lupus erythematosus, there is seen to be an increased frequency.
The mucosa-associated lymphoid tissue (MALT), also called mucosa-associated lymphatic tissue, is a diffuse system of small concentrations of lymphoid tissue found in various submucosal membrane sites of the body, such as the gastrointestinal tract, nasopharynx, thyroid, breast, lung, salivary glands, eye, and skin.
A mucinous neoplasm (also called colloid neoplasm) is an abnormal and excessive growth of tissue with associated mucin (a fluid that sometimes resembles thyroid colloid). It arises from epithelial cells that line certain internal organs and skin, and produce mucin (the main component of mucus).
The virus-positive cases are classified as a form of the Epstein–Barr virus-associated lymphoproliferative diseases. [12] Hodgkin lymphoma may be treated with chemotherapy, radiation therapy, and stem-cell transplantation. [4] The choice of treatment often depends on how advanced the cancer has become and whether or not it has favorable ...
Follicular hyperplasia (FH) is a type of lymphoid hyperplasia and is classified as a lymphadenopathy, which means a disease of the lymph nodes.It is caused by a stimulation of the B cell compartment and by abnormal cell growth of secondary follicles.
An autonomous thyroid nodule or "hot nodule" is one that has thyroid function independent of the homeostatic control of the HPT axis (hypothalamic–pituitary–thyroid axis). According to a 1993 article, such nodules need to be treated only if they become toxic; surgical excision (thyroidectomy), radioiodine therapy, or both may be used. [33]
Peyer's patches (or aggregated lymphoid nodules) are organized lymphoid follicles, named after the 17th-century Swiss anatomist Johann Conrad Peyer. [1] They are an important part of gut associated lymphoid tissue usually found in humans in the lowest portion of the small intestine, mainly in the distal jejunum and the ileum, but also could be detected in the duodenum.
the mAb MECA-367 recognizes mucosal addressin cell adhesion molecule 1 (MAdCAM-1), a counter-receptor for L-selectin and α4β7 integrin that is expressed in mucosal HEVs and in venules of intestinal lamina propria but can be induced in nonmucosal endothelial cells by tumor necrosis factor cx (TNF- α) and IL-l.