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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The Columbia Electronic Encyclopedia™ Copyright © 2013, Columbia University Press. Licensed from Columbia University Press. All rights reserved. www.cc.columbia.edu/cu/cup/
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

hyperplasia

[‚hī·pər′plā·zhə]
(medicine)
Increase in cell number causing an increase in the size of a tissue or organ.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The data of treatment, long-term follow-up, and outcomes are limited in DIPNECH patients.
Walts, "The spectrum of changes in adults with multifocal pulmonary neuroendocrine proliferations: what is the minimum set of pathologic criteria to diagnose DIPNECH?" Human Pathology, vol.
Although typical clinical features of a patient diagnosed with DIPNECH are the age between 60 and 70 years, female, it may also occur in much younger individuals of both genders [9].
Although clearly visible in radiographic examinations, DIPNECH is diagnosed by the 'golden standard' of tissue biopsy, examined in light microscopy with immunohistochemical staining [8].
When DIPNECH is taken into consideration as a separate lesion, it seems that a specific group of pulmonary malignancies is not combined with cigarette smoke or environmental pollution [23-25].
Morphology and antigen expression profile of pulmonary neuroendocrine cells in reactive proliferations and diffuse idiopathic pulmonary neuroendocrine cell hyperplasia (DIPNECH).