hypoplasia

hypoplasia /hy·po·pla·sia/ (-pla´zhah) incomplete development or underdevelopment of an organ or tissue.hypoplas´tic

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enamel hypoplasia  incomplete or defective development of the enamel of the teeth; it may be hereditary or acquired.

oligomeganephronic renal hypoplasia  oligomeganephronia.

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hy·po·pla·sia (hp-plzh)

n.

1. Incomplete or arrested development of an organ or part.

2. Atrophy due to destruction of some of the elements of a tissue or organ.

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hypo·plastic (-plstk) adj.

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Hypoplasia

A deficiency or underdevelopment of a tissue or body structure.

Mentioned in: DiGeorge Syndrome, Duodenal Obstruction

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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.

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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.

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hypoplasia (hī´pōplā´zh),

n the defective or incomplete development of a tissue or structure.

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).

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hypoplasia, hypoplasty

incomplete development or underdevelopment of an organ or tissue, e.g. cerebellar hypoplasia, bone marrow hypoplasia, gonadal hypoplasia, small intestinal mucosal hypoplasia.

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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.