Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSPLAVIV, YosefNETO, SergioKASPER, Ekkehard M.2019-09-232019-09-232019BRITISH JOURNAL OF NEUROSURGERY, v.33, n.4, p.418-421, 20190268-8697https://observatorio.fm.usp.br/handle/OPI/33580Quadrigeminal arachnoid cysts (QAC) are usually accompanied by a symptomatic obstructive hydrocephalus. Several endoscopic and surgical treatments exist; however, the critical location of these cysts further complicates treatment and usually more than one procedure is required. In this report, a 31 year old female with QAC and associated obstructive hydrocephalus was successfully treated with stereotactic placement of a permanent ventricular - cystic stent (intraventricualr - cystic catheterization) in single - session. Intraventricular - cystic stenting provides a long lasting communication between these two compartments, allowing persistent ""physiologic"" solution to this challenging condition.engrestrictedAccessQuadrigeminal arachnoid cyststereotacticstenthydrocephalussurgical-treatmentchildrencisternarticleCopyright TAYLOR & FRANCIS LTD10.1080/02688697.2017.1344618Clinical NeurologySurgery1360-046X