====== Intracranial arachnoid cyst fenestration ====== [[Craniotomy]] and [[fenestration]] of membranes is one of the main treatment options for symptomatic [[intracranial arachnoid cyst]]s. Open surgery advantages include, direct inspection of the cyst, biopsy sampling, fenestration in multilocular cysts and, in certain locations, cyst communication to [[basal cistern]]s ((Saura Rojas JE, Horcajadas Almansa Á, Ros López B. [Microsurgical treatment of intracraneal arachnoid cysts]. Neurocirugia (Astur). 2015 Apr 16. pii: S1130-1473(15)00029-9. doi: 10.1016/j.neucir.2015.02.006. [Epub ahead of print] Spanish. PubMed PMID: 25891259. )). ===== Options ===== Neuroendoscopic [[fenestration]]s. Microsurgical fenestrations +/- marsupialisation