Table 2.

Imaging summaries of 11 fetuses with schizencephaly

Case	Gestational age at MR	Head size (bi-parietal diameter)	Schizencephaly: Number Laterality Symmetry	Schizencephaly: Location/type	Cavum septum pellucidum	Fornix location	Other brain abnormalities
F1	22gw	3–10th centile	1 Unilateral	Right: inferior frontal gyrus/type 2 (closed lip)	Absent	Superior aspect of the 3rd ventricle	No
F2	21gw	10–50th centile	1 Unilateral	Right: occipital lobe/type 2 (closed lip)	Present	Normal	1. Cephalocele 2. Heterotopia
F3	33gw	< 3rd centile	2 Bilateral Asymmetric	Right: extensive frontal lobe/type 3 (open lip) Left: paracentral lobule/type 3 (open lip)	Disrupted	Normal	No
F4	21gw	10–50th centile	1 Unilateral	Left: paracentral lobule/type 3 (open lip)	Absent	Superior aspect of the 3rd ventricle	No
F5	28gw	90th centile	1 Unilateral	Right: parietal lobe/type 2 (closed lip)	Present	Normal	Polymicrogyria of adjacent brain
F6	25gw	10th centile	1 Unilateral	Left: paracentral lobule/type 2 (closed lip)	Absent	Superior aspect of the 3rd ventricle	Extensive bilateral polymicrogyria
F7	27gw	< 3rd centile	1 Unilateral	Left: middle and inferior frontal gyrus and paracentral/type 3 (open lip)	Absent	Superior aspect of the 3rd ventricle	Contralateral polymicrogyria
F8	26gw	< 3rd centile	2 Bilateral Symmetric	Right: parietal lobe/type 3 (open lip) Left: parietal lobe/type 3 (open lip)	Present	Normal	Microencephaly, encephalomalacia
F9	21gw	3–10th centile	2 Bilateral Asymmetric	Right: paracentral lobule/type 2 (closed lip) Left: extensive frontal/type 3 (open lip)	Present	Normal	No
F10	26gw	< 3rd centile	2 Bilateral symmetric	Right: paracentral lobule/type 3 (open lip) Left: paracentral lobule/type 3 (open lip)	Absent	Superior aspect of the 3rd ventricle	No
F11	31gw	50–90th centile	1 Unilateral	Right: middle frontal gyrus/type 2 (closed lip)	Absent	Superior aspect of the 3rd ventricle	Contralateral focal megalencephaly