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Follicular hyperplasia is one of the most common types of benign lymphadenopathies. [1] It can be typically found in children and young adults however all ages are subject to follicular hyperplasia, including the elderly. Lymphadenopathies such as follicular hyperplasia, are usually localized but can also be generalized and are non gender specific.
Lymphoid hyperplasia is the rapid proliferation of normal lymphocytic cells that resemble lymph tissue which may occur with bacterial or viral infections. [1] The growth is termed hyperplasia which may result in enlargement of various tissue including an organ, or cause a cutaneous lesion .
Most cases of reactive follicular hyperplasia are easy to diagnose, but some cases may be confused with follicular lymphoma. There are seven distinct patterns of benign lymphadenopathy: [6] Follicular hyperplasia: This is the most common type of reactive lymphadenopathy. [6]
Follicular cervicitis, H&E stain, with typical features, including tingible-body macrophages. [1] A tingible body macrophage (TBM) is a type of macrophage predominantly found in germinal centers of lymph nodes. They contain many phagocytized, apoptotic cells in various states of degradation, referred to as tingible bodies (tingible meaning ...
follicular hyperplasia (many follicles), focally large germinal centres, with poorly demarcated germinal centre (GC)/mantle zone interfaces (as GCs infiltrated by mantle zone lymphocytes), and; an expanded mantle zone.
Pediatric-type follicular lymphoma (PTFL) is a disease in which malignant B-cells (i.e. a lymphocyte subtype originating from the bone marrow) accumulate in, overcrowd, and cause the expansion of the lymphoid follicles in, and thereby enlargement of the lymph nodes in the head and neck regions [1] and, less commonly, groin and armpit regions. [2]
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The means by which EBV establishes a dendritic-histiocytic cell (i.e. follicular dendritic cell) infection are unclear. Follicular dendritic cells are connective tissue rather than lymphoid cells. They do, however, have a surface membrane receptor, CD21 (also known as complement receptor type 2), which EBV uses to enter B cells. EBV may escape ...