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 (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.