Anterior meningocele

Anterior meningocele is characterized by herniation of CSF-filled sac through a sacral anterior osseous defect. It is consistently found in the caudal regression syndrome.

It is in continuity with the thecal sac and lined by arachnoid and dura mater, but does not contain neural tissue.

Contrary to the commoner dorsal meningocele, it does not belong to the group of closed spinal dysraphism with a cutaneous mass.