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Am J Obstet Gynecol. 2006 Nov;195(5):1219-30. Epub 2006 Apr 17.

Nasal bone assessment in prenatal screening for trisomy 21.

Author information

1
Department of Obstetrics and Gynecology, Ohio State University, Dayton, OH, USA.

Abstract

A small nose is a common facial feature of individuals with trisomy 21. Evidence based on radiologic, histomorphologic, and sonographic studies shows that nasal bone abnormalities are significantly more common in trisomy 21 fetuses than in euploid fetuses. These abnormalities, which include both nasal bone absence and short nasal bone length, can be detected by prenatal ultrasound. In this article we review the evidence and discuss the potential value of assessment of the fetal nasal bone in screening for trisomy 21.

PMID:
16615922
DOI:
10.1016/j.ajog.2005.11.042
[Indexed for MEDLINE]

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