hyperplasia

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hyperplasia

(hī'pərplā`zhə): see hypertrophyhypertrophy
, enlargement of a tissue or organ of the body resulting from an increase in the size of its cells. Such growth accompanies an increase in the functioning of the tissue. In normal physiology the growth in size of muscles (e.g.
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.

Hyperplasia

 

an increase in the number of structural elements of tissues or organs. In man and animals, hyperplasia is based on the intensified reproduction of cells and the formation of new structures. Hyperplasia is observed in various types of pathological growth of tissues (chronic productive inflammation and tumor), in regeneration, and in hypertrophy. Hyperplasia often carries with it compensating characters. In plants, it may be a local growth of tissues resulting from mitotic or amitotic cell division. It occurs with infection by destructive or pathogenic organisms, during trauma, and under the influence of growth stimulants, pesticides, and other preparations. The result of hyperplasia is the formation of galls, calluses, and warts.

hyperplasia

[‚hī·pər′plā·zhə]
(medicine)
Increase in cell number causing an increase in the size of a tissue or organ.
References in periodicals archive ?
Why is the hyperplastic polyp a marker for precancerous condition of the gastric mucosa.
(3,5,6) In fact, prior reports of several large Brunner gland proliferative lesions without definitive evidence of cytologic atypia that were reported as Brunner gland adenomas, (5,7) in retrospect, represent examples of Brunner gland hyperplastic polyps or Brunner gland hamartomas.
Notably, 55% of hyperplastic polyps with typical signs of PHP first arose or progressed following rubber band ligation (Figure 1).
These presented cases suggest that the limitations in oral functions and the difficulty of maintaining the oral hygiene measures due to the FRF reconstruction surgery with the presence of trigger factors such as local trauma, chronic infection, or inadequate prosthesis probably played a role in the development of gingival reactive hyperplastic lesions.
Hyperplastic polyps were reported in all segments, with predominance in the distal colon and rectum (n = 569, 52.2%), followed by the proximal colon (n = 208, 19.1%).
Appendectomy specimens should be investigated histopathologically due to the strong association between appendiceal hyperplastic polyps and adenocarcinomas of the large intestine.
Root canal therapy or even extraction is recommended for the teeth with hyperplastic pulpitis as damage to the crown is of such an extent that it cannot be restored.
reported 7.72% prevalence of FGP versus 1.79% of gastric hyperplastic polypi.23 In a study related to FDG and its association with gastrointestinal tract(GIT) neoplasia, Genta et al.
It is evident now that clonal proliferations15,16, occur in up to 70% of the hyperplastic nodules and can express various markers of malignant follicular derived thyroid tumours such as peroxisome proliferator activated receptor (PPAR) and RET19.
Pseudomelanosis has never been reported along with hyperplastic gastric polyps.
The incidence of mucosal nonadenomatous NF-I associated GI polyps is even more rare and varies on a spectrum ranging from hyperplastic polyps and inflammatory polyps to juvenile-like polyps.