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Tag Archives: System – Lymphatic

Intraepithelial Lymphocytosis In Normal Small Bowel Samples 

What Is Intraepithelial Lymphocytosis In Normal Small Bowel Samples? Intraepithelial lymphocytosis is characterized by an abnormal increase in the numbers of intraepithelial lymphocytes (IELs) that are present in the small intestinal mucosa. Q: What are intraepithelial lymphocytes? A: Intraepithelial lymphocytes are ...

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Mesenteric Lymph Node Cavitation And Hyposplenism

What Is Mesenteric Lymph Node Cavitation And Hyposplenism? Mesenteric lymph node cavitation and hyposplenism combination is a rare lymphatic entity. It is characterized by involution (degeneration) of a mesenteric lymph node (abdominal) and absence of functional spleen tissue. Q: What ...

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Lymphoma, Enteropathy-Associated T-Cell (EATL) 

What Is Enteropathy-Associated T-Cell Lymphoma? Enteropathy associated T-cell lymphoma (EATL), although rare, is a tumor of intraepithelial lymphocytes. It is the most common primary gastrointestinal T-cell lymphoma and is characterized by its aggressive course and poor prognosis. Primary means this ...

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Vitiligo

What Is Vitiligo? Vitiligo is a pigmentation disorder of the skin characterized by permanent loss of melanocytes in defined areas and, in some patients, antibodies to melanin. Vitiligo has significant psychological impact if occurring before adulthood.1 Q: What are melanocytes? A: ...

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Lymphadenopathy

What Is Lymphadenopathy? Lymphadenopathy is an alteration of lymph nodes that is characterized by enlargement of lymph nodes greater than 1.5 cm caused by proliferation (increased production) of lymphocytes within the node. Q: What are lymph nodes? A: Lymph nodes ...

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Lymphomas, Extraintestinal

What Are Extraintestinal Lymphomas? Extraintestinal lymphomas (non-Hodgkin’s) are malignancies that arise in peripheral lymphatic tissue outside the intestinal tract from B-cell and T-cell lymphocytes. Q: What is peripheral lymphatic tissue? A: Peripheral lymphatic tissue includes lymph vessels, lymph, lymph nodes, and ...

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Celiac Disease, Refractory

What Is Refractory Celiac Disease? Refractory celiac disease, formerly called refractory sprue, is a severe complication characterized by persistence of symptoms and intestinal inflammation despite gluten free diet after 12 months.1 Refractory celiac disease appears in two forms, ulcerative jejunitis (RCD ...

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Lymphoma, B-Cell Non-Hodgkin’s

What Is B-Cell Non-Hodgkin’s Lymphoma? Bcell non-Hodgkin’s lymphoma is a malignant, monoclonal (arising from a single cell) proliferation of lymphocytes that is preceded by lymphadenopathy and characterized by varying, less predictable spread than Hodgkin’s disease. Lymphadenopathy is enlargement of lymph ...

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