hypertelorism

Abnormal distance between two paired organs. [hyper- + G. tele, far off, + horizo, to separate, fr. horos, a boundary]
- Bixler type h. accompanying features are microtia and clefting of the lip, palate, and nose, mental deficiency, atresia of the auditory canals, ectopic kidneys, and thenar hypoplasia; autosomal recessive inheritance
- canthal h. SYN: telecanthus.
- ocular h. [MIM*145400] increased width between the eyes due to an arrest in development of the greater wings of the sphenoid, thus fixing the orbits in the widely separated fetal position; autosomal dominant inheritance. Ocular h. is a feature of many syndromes. A distinct form [MIM*145410] shows other congenital defects such as hypospadias and esophageal anomalies. SEE ALSO: faciodigitogenital dysplasia. SYN: Greig syndrome, Opitz BBB syndrome, Opitz G syndrome.

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hy·per·tel·or·ism -'tel-ər-.iz-əm n excessive width between two bodily parts or organs (as the eyes)

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hy·per·telo·rism (hi″pər-teґlor-iz-əm) [hyper- + Gr. tēlouros distant] 1. abnormally increased distance between two organs or parts. 2. ocular h.

Medical dictionary. 2011.

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