Unusual prominence of the forehead, best appreciated in fetal profile. It may be associated with chromosomal abnormality, achondroplasia or lambdoid synostosis.
A sagittal view of the fetal face is most useful for detection of frontal bossing or prominence. This is a very subjective feature, but recently 3 dimensional ultrasound has been used to generate normative data for the whole gestation period.
A small nose may suggest relative prominence of the forehead. Flattening of the malar area of the midface may suggest relative prominence of the forehead.
Relative prominence of the forehead in comparison to the midface and nose.
- Chromosomal Anomalies
- Generalized gangliosidosis
- Oto-palato-digital I
- Teratogen Exposure
- Thanatophoric dysplasia
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