<prompt> A newborn has fused eyes and single nasal chamber undeveloped callosum. What is the most probable diagnosis?HoloprosencephalySchizencephalyPlagiocephalyBrachycephaly  <response>: Holoprosencephaly: brain doesnt properly divide into right and left hemispheres. Associated with trisomy 13 MC, trisomy 18, CHARGE syndrome Schizencephaly- characterized by abnormal slits or clefts in the cerebral hemispheres of the brain. Plagiocephaly- characterized by an asymmetrical distoion flattening of one side of the skull. Brachycephaly- result of premature synostosis of both coronal sutures. 