Medical Definition of Holoprosencephaly
1. Spectrum of craniofacial malformations resulting from the failure of the embryonic prosencephalon to undergo segmentation and cleavage. There are three types of malformations based on the degree of failure of separation of the prosencephalon: alobar, semilobar, and lobar. Concurrent facial anomalies can include cyclopia, cleft lip, cleft palate, and hypotelorism. Holoprosencephaly is thought to be a developmental field defect and is associated with chromosomal abnormalities. (12 Dec 1998)
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Lexicographical Neighbors of Holoprosencephaly
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