Fig. 13

Meningoencephalocele in a 13-month-old boy of African origin with a large midline facial mass. a Sagittal CT (brain window) shows herniation of cranial content through a bony defect located in the anterior skull base. The herniation contains a cyst-like mass with multiple septations and lined by glial tissue and/or meninges (arrow). b The exact size and configuration of the bony defect, as well as the extent of orbital bony malformation, is better appreciated on the three-dimensional CT VR reconstruction of the bony skull (asterisk). c Three-dimensional CT VR illustrating the extent and position of the meningoencephalocele with respect to the craniofacial skeleton. d Axial T2 shows cystic cerebrospinal fluid (CSF)-filled meningocele structures displacing the globes laterally and a suprasellar cyst (asterisk). e Fused sagittal CT and T2 illustrate CSF, parenchymal and bony abnormalities. Large suprasellar cyst (asterisk) lined by Liliequist membrane