<unk>  is thought to make up around 1% of all fetal abnormalities, with an incidence rate estimated at 0.1 to 10 in 10,000 deliveries. For unknown reasons, this disease seems to occur most often in newborn females (about 90%).
Iniencephaly
Klippel–Feil syndrome
Brachyphalangy
Microhydranencephaly
Oxycephaly
Hemihydranencephaly
Anencephaly
Hydranencephaly