Brain BPD 53 mm 5th - 10th centile
Brain FOD 63 mm < 3rd centile
Bone FOD 77 mm 10th centile
Vermis height 15 mm 50th centile
Vermis AP 9 mm 25th centile
Transverse cerebellar diameter: 31 mm 50th centile
Sulcal development and brain growth have progressed, and this is not consistent with lissencephaly. However, there is persistent substantially reduced hemispheric biometry and consistently normal cerebellar biometry.
In addition, somewhat atypical sulcal development is noted with a convex rather than flat appearance of the insular cortex bilaterally, and lack of visualisation of the callosal sulcus and superior temporal sulcus, for which there should be at least early evidence by this gestational age.