Liliequist membrane: radiological evaluation, clinical and therapeutic implications.
In a simplistic and succinct way, Liliequist membrane may be understood as a projection formed by an arachnoid membrane extending from the dorsum sellae to the mammillary bodies. In spite of being well known to neurosurgeons, many radiologists neither know this anatomical structure nor give importance to its study. The imaging evaluation of this membrane is feasible and may be interesting for a better preoperative planning; postoperative evaluation of third ventriculostomies; and understanding of suprasellar arachnoid cysts and perimesencephalic hemorrhage. The present article illustrates the anatomy of the membrane, with emphasis on imaging findings, besides describing its possible clinical and surgical implications.
MDs, Neuroradiology and Head & Neck Fellows at Hospital do Coração (HCor) and Teleimagem, São Paulo, SP, Brazil.
Daniel Aguiar
DA
Dias
MD, Neuroradiologist at Hospital do Coração (HCor) and Teleimagem, São Paulo, SP, Brazil.
Fábio Luiz Onuki
FL
Castro
MD, Neuroradiologist at Hospital do Coração (HCor), Teleimagem, and Alta, São Paulo, SP, Brazil.
James Henrique
JH
Yared
MD, Neuroradiologist and Head & Neck Radiology, Hospital do Coração (HCor), Teleimagem, and Alta, São Paulo, SP, Brazil.
Ademar
A
Lucas Júnior
MDs, Neuroradiology and Head & Neck Fellows at Hospital do Coração (HCor) and Teleimagem, São Paulo, SP, Brazil.
Luiz Alves
LA
Ferreira Filho
MD, Head of the Neuroradiology Unit at Hospital do Coração (HCor), Teleimagem, and Alta, São Paulo, SP, Brazil.
Nelson Fortes Paes Diniz
NF
Ferreira
Liliequist; Magnetic resonance imaging; Membrane; Neuroradiology; Third ventriculostomy