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Hyperplasia is considered to be a physiological (normal) response to a specific stimulus, and the cells of a hyperplastic growth remain subject to normal regulatory control mechanisms. [5] However, hyperplasia can also occur as a pathological response, if an excess of hormone or growth factor is responsible for the stimuli.
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.
The cause is usually pressure from the flange of a denture which causes chronic irritation and a hyperplastic response in the soft tissues. [6] Women during pregnancy can also present with an epulis, which will resolve after birth. Fibroepithelial polyps, pedunculated lesions of the palate beneath an upper denture, are associated with this ...
Rectoanal inhibitory reflex - a transient relaxation of the internal anal sphincter in response to rectal distention. Rooting reflex — turning of an infant's head toward anything that strokes the cheek or mouth. Righting reflex - a proprioceptive reflex; Shivering — shaking of the body in response to early hypothermia in warm-blooded animals.
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.
Biopsy of the stomach in Ménétrier disease; the substantial pit hyperplasia makes the large rugal folds appear to be covered by myriad polyps resembling hyperplastic polyps. The muscularis propria is the folded structure at the bottom center. Specialty: Gastroenterology
For example, the body regenerates a full bone within ten years, while non-injured skin tissue is regenerated within two weeks. [2] With injured tissue, the body usually has a different response. This emergency response usually involves building a degree of scar tissue over a time period longer than a regenerative response, as has been proven ...
It is a type of arteriolosclerosis, which refers to thickening of the arteriolar wall and is part of the aging process. [4] Associations. It is associated with aging, hypertension, diabetes mellitus, [5] dementia, [6] and may be seen in response to certain drugs (calcineurin inhibitors). [7] It is often seen in the context of kidney pathology.