Ultrastructural Changes in the Liliequist Membrane in the Hydrocephalic Process and Its Implications for the Endoscopic Third Ventriculostomy Procedure

Abstract

AIM: Fenestration of Liliequist membrane (LM) during endoscopic third ventriculostomy (ETV) is extremely important for the success of the procedure. It is noteworthy that LM usually shows a tough and dense stucture in long-standing hydrocephalus cases different from its usual arachnoidal membrane-like structure observed in new-onset hydrocephalus cases. The structural variation of LM in different hydrocephalic states was investigated histologically in this study.