Congenital retrognathia, with or without Pierre Robin Sequence (PRS), is a rare anomaly which can be associated with chromosomal abnormalities. Respiratory and feeding consequences can be present at birth. After birth, the diagnosis of retrognathia is based on the clinical examination. Cephalometry can be used to complete the diagnosis. Several authors have proposed the use of objective quantitative ultrasound parameters for the antenatal screening of PRS. In our study, the investigators evaluated fetal cephalometry. The aim First, the investigators studied the inter- and intra-observer reproducibility of cephalometry. Second, the investigators established reference values for antenatal cephalometry in normal fetuses. Third, the investigators compared the diagnostic performance of cephalometry and the other angles described in the literature for the diagnosis of retrognathia.
Study Type
OBSERVATIONAL
Enrollment
68
Fetal cephalometry
Uhmontpellier
Montpellier, France
Reproducibility of cephalometry
Reproducibility of cephalometry
Time frame: During ultrasound
Perfomance of several angle to diagnose retrognatism
Perfomance of several angle to diagnose retrognatism
Time frame: During ultrasound
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