hyperplasia


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

hyperplasia

 [hi″per-pla´zhah]
abnormal increase in volume of a tissue or organ caused by the formation and growth of new normal cells. See also hypertrophy and proliferation. adj., adj hyperplas´tic.
benign prostatic hyperplasia benign prostatic hypertrophy.
cutaneous lymphoid hyperplasia a group of benign cutaneous disorders characterized by accumulations of large numbers of lymphocytes and histiocytes in the skin, which may occur as a reaction to insect bites, allergy hyposensitization injections, light, trauma, or a tattoo pigment or may be of unknown etiology.
focal nodular hyperplasia (FNH) a benign, usually asymptomatic tumor of the liver, occurring chiefly in women; it is a firm, nodular, highly vascular mass resembling cirrhosis, usually with a stellate fibrous core containing numerous small bile ducts, and having vessels lined by Kupffer cells.
nodular hyperplasia of the prostate benign prostatic hypertrophy.

hy·per·pla·si·a

(hī-pĕr-plā'zhē-ă),
An increase in the number of normal cells in a tissue or organ, excluding tumor formation, whereby the bulk of the part or organ may be increased.
See also: hypertrophy.
[hyper- + G. plasis, a molding]

hyperplasia

(hī′pər-plā′zhə)
n.
An abnormal increase in the number of cells in a tissue or organ, with consequent enlargement of the part or organ.

hy′per·plas′tic (-plăs′tĭk) adj.

hyperplasia

An abnormal ↑ in number of cells in an organ or tissue, resulting in an increase in size

hy·per·pla·si·a

(hī'pĕr-plā'zē-ă)
An increase in the number of cells in a tissue or organ, excluding tumor formation, whereby the bulk of the part or organ may be increased.
See also: hypertrophy
Compare: hypoplasia
[hyper- + G. plasis, a molding]

hyperplasia

An increase in the number of cells in a tissue or organ causing an increase in the size of the part. Hyperplasia is not a cancerous process. It is often a normal response to increased demand and ceases when the stimulus is removed. To be distinguished from HYPERTROPHY.

hyperplasia

an increase in tissue mass caused by an increase in cell number.

Hyperplasia

A condition where cells, such as those making up the prostate gland, rapidly divide abnormally and cause the organ to become enlarged.

hyperplasia

Any condition in which there is an increase in the number of cells in an organ or a tissue. It usually excludes tumour formation. Example: choroidal naevus.

hy·per·pla·si·a

(hī'pĕr-plā'zē-ă)
Increased number of normal cells in tissue or organ, excluding tumor formation, whereby bulk of the part or organ may be increased.
See also: hypertrophy
[hyper- + G. plasis, a molding]
References in periodicals archive ?
Prenatal dexamethasone for congenital adrenal hyperplasia. J Bioethical Inquiry.
Intravascular Papillary Endothelial Hyperplasia (Masson's Tumor) of the Mouth - A Case Report.
Bilateral coronoid hyperplasia: a report of six cases.
Additional causes of bleeding after menopause include uterine polyps, endometrium hyperplasia, due to thinning of the vaginal tissues often develops due to a decrease in estrogen.3,6
In our study, due to using a non-dual-echo technique, we applied CSR to quantify fat tissue, which confirmed that this was a thymic hyperplasia case without fat.
Of the 766 patients, polyps were histologically benign (no atypia) in 96.21% of patients, hyperplasia with atypia was identified in 3.26% of cases, and invasive endometrial carcinoma was present in only 0.52% of patients.
Reactive lymphoid hyperplasia of the liver is a very rare disease of the liver, often found incidentally and often incorrectly diagnosed as hepatocellular carcinoma on preoperative workup.
Congenital Adrenal Hyperplasia owing to 3 Beta-Hydroxysteroid Dehydrogenase Deficiency.
In the 46-55 age groups, endometrial hyperplasia was the most common pattern.
Based on the morphologic and immunohistochemical findings, a diagnosis of mammary fibroadenomatoid hyperplasia with probable influence of ovarian steroids was made.