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


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.


(Pathology) enlargement of a bodily organ or part resulting from an increase in the total number of cells. Compare hypertrophy
hyperplastic adj


(ˌhaɪ pərˈpleɪ ʒə, -ʒi ə, -zi ə)

1. abnormal multiplication of cells.
2. enlargement of a part due to an abnormal numerical increase of its cells.
hy`per•plas′tic (-ˈplæs tɪk) adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.hyperplasia - abnormal increase in number of cells
dysplasia - abnormal development (of organs or cells) or an abnormal structure resulting from such growth
benign prostatic hyperplasia, BPH - enlarged prostate; appears to be part of the natural aging process


n. hiperplasia, proliferación excesiva de células normales en un tejido.


n hiperplasia; benign prostatic— hiperplasia prostática benigna; congenital adrenal — hiperplasia suprarrenal congénita
References in periodicals archive ?
6,7] Therefore, on the basis of aforementioned experts' views and our discovery, adrenal myelolipoma and atypical hyperplasia of adrenal cortex may be anatomically and functionally related in hormonally active cases.
Phase 1/2 Clinical Study Will Evaluate Safety and Efficacy of SB-030 in the Reduction of Short-Term Neointimal Hyperplasia Following Vascular Intervention-
Focal epithelial hyperplasia (FEH), or Heck's disease, is a virus-induced, local proliferation of oral squamous epithelium.
Congenital adrenal hyperplasia (CAH) is caused by deficiency in various enzymes responsible for steroidogenesis.
Parathyroid hyperplasia is a cause of hyperparathyroidism defined as a proliferation of parenchymal cells leading to an increase in gland weight.
prostatic hyperplasia and the treatment of both benign prostatic
Although the cause of atrophy is unknown, several hypotheses have been put forward, such as ischemia, inflammation, hormones, and compressive effects of benign prostatic hyperplasia.
They are described as hypertrophy, hyperplasia or hamartomatous proliferations in the few published reports (2).
Fifty-six premenopausal women (mean age, 47 years) with abnormal bleeding due to non-atypical endometrial hyperplasia were randomly assigned to receive, in double-blind fashion, genistein (as genistein aglycone, 54 mg/day), norethisterone acetate (a progestin, 10 mg/day on days 16-25 of the menstrual cycle), or placebo for six months.
Here, we report a case of myelolipoma associated with medullary hyperplasia presenting with the clinical findings of pheochromocy-toma.
Washington, Nov 9 (ANI): Decrease in the use of postmenopausal hormone therapy has simultaneously led to the reduction in the incidence of atypical ductal hyperplasia, a known risk factor for breast cancer, say researchers.
Unilateral angiolymphoid hyperplasia with eosinophilia involving the left arm and hand.