Fig. 2From: Non-visualisation of cavum septi pellucidi: implication in prenatal diagnosis?ACC. a, b Axial ultrasound and MRI at 33 and 35 weeks’ gestation respectively demonstrates non-visualisation of the CSP, parallel orientation of lateral ventricles (arrows), and colpocephaly (dotted arrow). c Coronal T2-weighted MRI through the frontal horns demonstrates absence of the CSP, ACC with steer horn configuration of the frontal ventricles (arrow)Back to article page