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.

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]

hypoplasia

/hy·po·pla·sia/ (-pla´zhah) incomplete development or underdevelopment of an organ or tissue.hypoplas´tic
enamel hypoplasia  incomplete or defective development of the enamel of the teeth; it may be hereditary or acquired.
oligomeganephronic renal hypoplasia  oligomeganephronia.

hypoplasia

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

hy′po·plas′tic (-plăs′tĭk) adj.

hypoplasia

[hī′pōplā′zhə]
Etymology: Gk, hypo + plassein, to mold
underdevelopment of an organ or a tissue, usually resulting from the presence of a smaller-than-normal number of cells. Kinds of hypoplasia are cartilage-hair hypoplasia and enamel hypoplasia. Also called hypoplasty. Compare aplasia, hyperplasia. See also oligomeganephronia, osteogenesis imperfecta. hypoplastic, adj.

hypoplasia

The underdevelopment, incomplete development or atrophy of a tissue or organ.

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]

hypoplasia

Underdevelopment of a tissue or organ as a result of a failure of production of a sufficient number of cells. Compare HYPERPLASIA.

hypoplasia

deficiency in growth.

Hypoplasia

A deficiency or underdevelopment of a tissue or body structure.

hypoplasia

underdevelopment/atrophy due to decreased cell numbers or destruction of tissue elements

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.

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]

hypoplasia (hī´pōplā´zhə),

n the defective or incomplete development of a tissue or structure.
Enlarge picture
Hypoplasia.
hypoplasia, enamel, chronologic,
n a prenatal or postnatal systemic type affecting amelogenesis occurring at the time of the systemic disorder.
hypoplasia, enamel, hereditary (hereditary brown tooth),
n a hereditary anomaly of the enamel affecting the primary and permanent dentition in which a thin layer of hard enamel covering the yellow dentin gives the tooth a brown appearance.
hypoplasia, mandibular,
n an abnormally small mandibular development (e.g., in micrognathia or brachygnathia).

hypoplasia, hypoplasty

incomplete development or underdevelopment of an organ or tissue, e.g. cerebellar hypoplasia, bone marrow hypoplasia, gonadal hypoplasia, small intestinal mucosal hypoplasia.
References in periodicals archive ?
9% patients followed by main pulmonary artery (MPA) hypoplasia which was diagnosed in 9.
Since developmental defects predominantly manifest themselves as hypoplasia and atrophy,15 volume assessment should be a key parameter to assess such damage.
Oral manifestations which may be seen include malocclusion, labiogingival adherences, gingival hypertrophy, accessory labiogingival frenula, serrated incisal margins, dental transposition, diastema, conical teeth, enamel hypoplasia, hypodontia, and teeth erupted or exfoliated prematurely, which were present in our patient too.
Hypoplasia of cerebellar vermis is observed in both DWM and DWV (14,28).
1) also reported a lack of foveal darkening in one patient and only slightly reduced foveal attenuation of autofluorescence in their other foveal hypoplasia cases.
The presence of an occlusive event in a dominant A2 segment of the anterior cerebral artery when a hypoplasia variant exists in the contralateral A2 segment increases the risk of regional ischemia in both hemispheres (Kayembe et al.
Both magnetic resonance imaging (MRI) and CT demonstrated polysplenia, SIT, and pancreatic hypoplasia as incidental findings.
According to certain authors, the disruption of anterior collaterals is an isolated risk factor for brain ischemia development, even in the absence of extracranial carotid disease (A1 hypoplasia syndrome), [14] while the disruption in the posterior collaterals has an impact on hemodynamics only in the presence of a carotid occlusive disease [15].
The tongue involvement may range from a bifid anterior tip with ankyloglossia and adhesion to the mandibula cleft margins, up to complete tongue hypoplasia.
Cerebellar hypoplasia typically occurs concurrently with lissencephaly in the classic form of the disease (DOBYNS WB & TRUWIT, 1995; GOLDEN, 2001).
Kittens with cerebellar hypoplasia usually appear normal at birth but show signs as soon as they begin to toddle around.