Fig. 3
From: Non-visualisation of cavum septi pellucidi: implication in prenatal diagnosis?
Open-lip schizencephaly. a Coronal ultrasound through the atria at 30 weeks’ gestation with non-visualisation of the CSP (not shown) demonstrates a supratentorial cyst (asterisk), with a differential diagnosis of porencephaly versus schizencephaly. b Coronal T2-weighted MRI at 32 weeks’ gestation demonstrates absence of the CSP and bilateral frontoparietal clefts lined by grey matter (arrow) extending from the pial surface to the lateral ventricle consistent with open-lip schizencephaly