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Follicular hyperplasia : ウィキペディア英語版 | Follicular hyperplasia Follicular hyperplasia (or "Reactive follicular hyperplasia" or "Lymphoid nodular hyperplasia") is a type of lymphoid hyperplasia. It is caused by a stimulation of the B cell compartment. It is caused by an abnormal proliferation of secondary follicles and occurs principally in the cortex without broaching the lymph node capsule. The follicles are cytologically polymorphous, are often polarized, and vary in size and shape. Follicular hyperplasia must be distinguished from follicular lymphoma (bcl-2 protein is expressed in neoplastic follicles, but not reactive follicles). == Causes == Some specific reactive lymphadenopathies with a predominantly follicular pattern: *Rheumatoid arthritis *Sjogren syndrome *IgG4-related disease (IgG4-related lymphadenopathy) *Kimura disease *Toxoplasmosis *Syphilis *Castleman disease *HIV-associated lymphadenopathy *Progressive transformation of germinal centers (PTGC)
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Follicular hyperplasia」の詳細全文を読む
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