hypoplasia

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hypoplasia

 [hi″po-pla´zhah]
incomplete development or underdevelopment of an organ or tissue. adj., adj hypoplas´tic.
focal dermal hypoplasia a hereditary disorder found exclusively in females, transmitted as an X-linked dominant trait, characterized typically by linear areas of hypoplasia of the skin with herniation of underlying tissue through the defects; telangiectasias; linear or reticular areas of skin discoloration; localized superficial fatty deposits in the skin; papillomas of mucous membranes or skin around various orifices; and anomalies of the extremities, including webbed fingers and toes and absence of some or all of the digits (oligodactyly or adactyly). There may also be other defects affecting the eyes, teeth, or other body systems. Called also Goltz syndrome.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

hy·po·pla·si·a

(hī'pō-plā'zē-ă),
1. Underdevelopment of a tissue or organ, usually due to a deficiency in the number of cells.
2. Atrophy due to destruction of some of the elements and not merely to their general reduction in size.
[hypo- + G. plasis, a molding]
Farlex Partner Medical Dictionary © Farlex 2012

hypoplasia

(hī′pō-plā′zhə)
n.
Incomplete or arrested development of an organ or a part.

hy′po·plas′tic (-plăs′tĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

hypoplasia

The underdevelopment, incomplete development or atrophy of a tissue or organ.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

hy·po·pla·si·a

(hī'pō-plā'zē-ă)
1. Underdevelopment of a tissue or organ, usually due to a decrease in the number of cells.
2. Atrophy due to destruction of some of the elements of a tissue or organ, and not merely to their general reduction in size.
Compare: hyperplasia
[hypo- + G. plasis, a molding]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

hypoplasia

Underdevelopment of a tissue or organ as a result of a failure of production of a sufficient number of cells. Compare HYPERPLASIA.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

hypoplasia

deficiency in growth.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Hypoplasia

A deficiency or underdevelopment of a tissue or body structure.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

hypoplasia

Any condition in which there is an underdevelopment, or a decrease in the number of cells, of an organ or tissue. Example: optic nerve hypoplasia in which there is a reduction of axons, which, in severe cases, leads to visual impairment. See hyperplasia.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

hy·po·pla·si·a

(hī'pō-plā'zē-ă)
1. Underdevelopment of a tissue or organ, usually due to a deficiency in the number of cells.
2. Atrophy due to destruction of some of the elements and not merely to their general reduction in size.
[hypo- + G. plasis, a molding]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
Therefore this could explain the presence of the different phenotypes according to the dose of signaling and these can range from hypertrophy and / or mandibular hypoplasia, through the micrognathism, up to the total lack of formation of the jaw called agnathia.
On examination, the baby had a very small oral aperture (microstomia), poorly developed lower jaw (mandibular hypoplasia), external ears displaced ventromedially in the neck close to the mid line (synotia) (figure-1).
Key words: Distraction osteogenesis, Mandibular hypoplasia in children
The Brevi-Sesenna device allows for excellent management of upper airway obstruction secondary to mandibular hypoplasia in neonates.
It derives from a defect of blastogenesis involving primarily aural, oral, and mandibular development, resulting in microtia, mandibular hypoplasia, vertebral anomalies, and epibulbar dermoid/lipodermoids.
DISCUSSION: Goldenhar described a syndrome with epibulbar dermoids, pre-auricular appendages and mandibular hypoplasia (hemifacial microsomia) which was expanded by Gorlin etal to "occuloauriculovertebral spectrum".
The most common and predominant symptoms are TMJ sounds, pain, restriction of mandibular move- ment, trismus, swelling, ankylosis, and facial asymme- tries are also described.7 In this case, snoring and the mandibular hypoplasia were the patient's chief com- plaints, which motivated her to seek medical assis- tance.
Treacher Collins syndrome is characterized by antimongoloid-slanting palpebral fissures and mandibular hypoplasia. (17) Nager's syndrome is very similar, but it is also characterized by preaxial skeletal defects.