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- Publisher
- Wiley
- Copyright
- Copyright © 1999 Wiley Subscription Services, Inc., A Wiley Company
- ISSN
- 1552-4825
- eISSN
- 1552-4833
- DOI
- 10.1002/(SICI)1096-8628(19991126)87:3<226::AID-AJMG6>3.0.CO;2-S
- Publisher site
- See Article on Publisher Site
Abstract
Hypochondroplasia (HCH) is caused by mutations in the fibroblast growth factor receptor type 3 (FGFR 3). Prenatal diagnosis of HCH based exclusively on the sonographic measurements of the fetal skeleton is difficult and has not been reported. We describe a newborn infant with HCH who was born to a mother with achondroplasia (ACH) and a father with HCH. Serial sonographic measurements were recorded from 16 weeks of gestation. All measurements remained normal up to 22 weeks of gestation. At 25 weeks of gestation, the long bones began to appear shorter than expected for gestational age, while the head measurements (biparietal diameter and head circumference) remained normal. The measurements were sufficiently different to distinguish from findings in normal and achondroplastic fetuses. Our findings suggest that it is possible to distinguish the normal fetus from a fetus affected with HCH and to distinguish HCH and ACH from each other based on the sonographic measurements alone. To our knowledge, this is the first report of longitudinal sonographic measurements of HCH in the second and third trimesters. Am. J. Med. Genet. 87:226–229, 1999. © 1999 Wiley‐Liss, Inc.
Journal
American Journal of Medical Genetics Part A – Wiley
Published: Feb 26, 2001
Keywords: ; ; ; ;