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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Pathology) enlargement of a bodily organ or part resulting from an increase in the total number of cells. Compare hypertrophy
hyperplastic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n. hiperplasia, proliferación excesiva de células normales en un tejido.
English-Spanish Medical Dictionary © Farlex 2012


n hiperplasia; benign prostatic— hiperplasia prostática benigna; congenital adrenal — hiperplasia suprarrenal congénita
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
Intravascular papillary endothelial hyperplasia (IPEH)/Masson's tumor
Intravascular papillary endothelial hyperplasia (IPEH) (Masson's hemangioma or Masson's tumor) is an unusual benign vascular disease accounting for approximately 2% of all vascular tumors of the skin and the subcutaneous tissue.
(4,7) We report a case of a patient with adrenal angiosarcoma, discuss the diagnostic challenges of angiosarcoma with the presence of massive hematoma and intravascular papillary endothelial hyperplasia-like features, and differentiate angiosarcoma from intravascular papillary endothelial hyperplasia (IPEH)-Masson's tumour.
The differential diagnosis of intravascular KS includes intravascular papillary endothelial hyperplasia, intravenous PG, intravascular fasciitis, papillary intralymphatic angioendothelioma (Dabska tumor), and intravascular myopericytoma.
In this article, we report a case of intravascular papillary endothelial hyperplasia of the hypopharynx and larynx, which caused dysphagia in an 18-year-old female patient.
Intravascular papillary endothelial hyperplasia is a benign lesion of vascular origin that is caused by an excessive proliferation of endothelial cells in normal blood vessels or vascular malformations.

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