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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 .
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 ...
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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.
Cutaneous lymphoid hyperplasia with nodular pattern, a condition of the skin characterized by a solitary or localized cluster of asymptomatic erythematous to violaceous papules or nodules [2]: 725 Cutaneous lymphoid hyperplasia with bandlike and perivascular patterns, a condition of the skin characterized by skin lesions that clinically ...
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]