{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,18]],"date-time":"2026-10-18T00:37:11Z","timestamp":1792283831663,"version":"4.4.0"},"reference-count":37,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2014,10,20]],"date-time":"2014-10-20T00:00:00Z","timestamp":1413763200000},"content-version":"unspecified","delay-in-days":111,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Can. J. Neurol. Sci."],"published-print":{"date-parts":[[2014,7]]},"abstract":"<jats:sec id=\"S0317167100018515_abs1\"><jats:title>Background:<\/jats:title><jats:p>Tectal gliomas commonly present with hydrocephalus from obstruction of the aqueduct of Sylvius. The creation of a ventriculostomy in the floor of the third ventricle (ETV) has been previously reported to by-pass aqueduct obstruction. The goal of this study was to determine the safety and efficacy of ETV in the presence of an obstructing tectal glioma.<\/jats:p><\/jats:sec><jats:sec id=\"S0317167100018515_abs2\"><jats:title>Methods:<\/jats:title><jats:p>We retrospectively reviewed the clinical presentation, management, and clinical outcome after ETV in patients diagnosed with tectal glioma and obstructive hydrocephalus in our institution over a period of 15 years. Shunt freedom at follow-up was the main outcome variable. Long-term clinical outcome was assessed at the most recent clinic visit. Clinical outcome was ranked as excellent, good, or poor according to resolution of symptoms and patient functional status.<\/jats:p><\/jats:sec><jats:sec id=\"S0317167100018515_abs3\"><jats:title>Results:<\/jats:title><jats:p>The median age at presentation was 16.5 years (range: 6.4 to 59 years) and the most common presenting symptom was headache. Eleven patients had ETV as a primary procedure and three patients underwent ETV as a substitute for shunt revision at the time of shunt failure. At follow-up (median 3.9 years, range: 2.2 to 7 years) 13 of 14 patients remain shunt independent with excellent (n=9) or good outcomes (n=5).<\/jats:p><\/jats:sec><jats:sec id=\"S0317167100018515_abs4\"><jats:title>Conclusions:<\/jats:title><jats:p>In patients with tectal glioma causing obstructive hydrocephalus, ETV can be performed safely in the primary setting or as a substitute for shunt revision. A high rate of shunt freedom (78%-100%) at prolonged follow-up can be expected in this patient population.<\/jats:p><\/jats:sec>","DOI":"10.1017\/s0317167100018515","type":"journal-article","created":{"date-parts":[[2014,12,2]],"date-time":"2014-12-02T11:25:29Z","timestamp":1417519529000},"page":"476-481","source":"Crossref","is-referenced-by-count":9,"title":["Endoscopic Third Ventriculostomy for Hydrocephalus Due to Tectal Glioma"],"prefix":"10.1017","volume":"41","author":[{"given":"Roberto Jose","family":"Diaz","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fady M.","family":"Girgis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark G.","family":"Hamiltonn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2014,10,20]]},"reference":[{"key":"S0317167100018515_ref010","doi-asserted-by":"publisher","DOI":"10.1159\/000069823"},{"key":"S0317167100018515_ref024","first-page":"471","article-title":"MR of aqueductal stenosis: evidence of a broad spectrum of tectal distortion","volume":"10","author":"Barkovich","year":"1989","journal-title":"Am J Neuroradiol"},{"key":"S0317167100018515_ref023","doi-asserted-by":"publisher","DOI":"10.1007\/BF01808546"},{"key":"S0317167100018515_ref003","doi-asserted-by":"publisher","DOI":"10.3171\/foc.2005.19.6.9"},{"key":"S0317167100018515_ref008","first-page":"76","article-title":"Tectal plate gliomas","volume":"126","author":"Lapras","year":"1994","journal-title":"Part I: Microsurgery of the tectal plate gliomas. 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