Alternative Technique: Endoscopic Transseptumpellucidumrostrostomy (ETSPR)

In certain situations, endoscopic third ventriculostomy may be difficult to perform, such as in cases of thickening of the floor of the third ventricle and anatomical variations in the interpeduncular cistern by inflammatory reaction making it difficult to identify the anatomical parameters and perforation of the floor or when the interpeduncular cistern is reduced or occupied by an ectatic basilar artery. Therefore, alternatives to endoscopic fenestrations, diverting and restoring the CSF flow, are extremely useful. This chapter aims to present a study of the anatomical viability of performing a communication between the ventricular system and the longitudinal fissure of the brain, by means of fenestration of the rostral lamina of the corpus callosum, and establish the anatomical parameters for its performance as a surgical procedure by an endoscopic route.