Fig. 4
From: Non-visualisation of cavum septi pellucidi: implication in prenatal diagnosis?
SOD. a Coronal ultrasound through the frontal horns demonstrates non-visualisation of the CSP and “squared off” morphology of the frontal horns (asterisk) suggestive of SOD. Columns of fornix are inferior to the CSP (arrows). b Coronal T2-weighted MRI displays characteristic “batwing” configuration of the frontal horns with communication between the horns (asterisk). c Axial T2-weighted MRI at 32 weeks of gestation confirms the absence of CSP and colpocephaly. There is separation of the foremost portion of the anterior horns (arrows). No cortical dysplasia was present. Postnatal ophthalmological evaluation was consistent with optic nerve hypoplasia