Atelencephaly (also termed atelencephalic microcephaly) is a rare and extreme disorder with only a handful of published cases. In this anomaly, the derivatives of the telencephalon are absent or dysplastic, while more caudal structures are normal or mildly deformed. It falls under the aprosencephaly/atelencephaly spectrum (AAS) 3.
See also
- aprosencephaly: most extensive anomaly which involves absence dysplasia of structures of the diencephalon as well as association with holoprosencephalic facies.