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 ?
Fibrous hyperplasias are considered reactive proliferations of fibroblastic tissue rather than neoplastic proliferations.
16) Though the GCF is very similar histologically to other fibrous hyperplasias, clinical features may aid in dintinguishing it from other lesions.
In spite of similar histology, several distinctions can be made between a number of fibrous hyperplasias according to characteristics such as age distribution, gender predilection, location and etiology.
Color and vascularity of lesions can also be distinguishing features when diagnosing fibrous hyperplasias.
Although most fibrous hyperplasias are relatively innocuous lesions, histologic examination of the tissue is necessary in most cases to rule out the possibility of malignancy.
Dental hygienists should be familiar with the different types of fibrous hyperplasias they may encounter during patient treatment and should note such lesions for further evaluation by dentists.