{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,27]],"date-time":"2026-02-27T05:10:55Z","timestamp":1772169055772,"version":"3.50.1"},"reference-count":10,"publisher":"F1000 Research Ltd","license":[{"start":{"date-parts":[[2016,1,7]],"date-time":"2016-01-07T00:00:00Z","timestamp":1452124800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["f1000research.com"],"crossmark-restriction":false},"short-container-title":["F1000Res"],"abstract":"<ns4:p>Acute obstructive hydrocephalus due to infratentorial extra-axial fluid collection (EAFC) is an extremely rare complication of foramen magnum decompression (FMD) and durotomy for Chiari malformation type I. Presence of infratentorial\u00a0 EAFC invariably causes obstruction at the level of the fourth ventricle or aqueduct of Silvius, thereby indicating its definitive role in hydrocephalus. Pathogenesis of EAFC is said to be a local arachnoid tear as a result of durotomy, as this complication is not described in FMD without durotomy. Controversy exists in management. Usually EAFC is said to resolve with conservative management; so hydrocephalus doesn\u2019t require treatment. However, in this case EAFC was progressive and ventriculo-peritoneal shunting (VPS) was needed for managing progressive and symptomatic hydrocephalus.<\/ns4:p>","DOI":"10.12688\/f1000research.7627.1","type":"journal-article","created":{"date-parts":[[2016,1,7]],"date-time":"2016-01-07T10:33:27Z","timestamp":1452162807000},"page":"33","update-policy":"https:\/\/doi.org\/10.12688\/f1000research.crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Case Report: Acute obstructive hydrocephalus associated with infratentorial extra-axial fluid collection following foramen magnum decompression and durotomy for Chiari malformation type I"],"prefix":"10.12688","volume":"5","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6079-3792","authenticated-orcid":false,"given":"Sunil","family":"Munakomi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Binod","family":"Bhattarai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pramod","family":"Chaudhary","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2560","published-online":{"date-parts":[[2016,1,7]]},"reference":[{"key":"ref-1","doi-asserted-by":"publisher","first-page":"291-6","DOI":"10.3171\/jns.2003.99.2.0291","article-title":"Surgical experience in 130 pediatric patients with Chiari I malformations.","volume":"99","author":"R Tubbs","year":"2003","journal-title":"J Neurosurg."},{"key":"ref-2","doi-asserted-by":"publisher","first-page":"640127","DOI":"10.1155\/2012\/640127","article-title":"Surgical management of patients with Chiari I malformation.","volume":"2012","author":"J Siasios","year":"2012","journal-title":"Int J Pediatr."},{"key":"ref-3","doi-asserted-by":"publisher","first-page":"510-3","DOI":"10.3171\/2010.8.JNS10413","article-title":"Symptomatic posterior fossa and supratentorial subdural hygromas as a rare complication following foramen magnum decompression for Chiari malformation Type I.","volume":"114","author":"B Bahuleyan","year":"2011","journal-title":"J Neurosurg."},{"key":"ref-4","doi-asserted-by":"publisher","first-page":"101-4","DOI":"10.1159\/000048361","article-title":"Acute hydrocephalus following a Chiari I decompression.","volume":"36","author":"S Elton","year":"2002","journal-title":"Pediatr Neurosurg."},{"key":"ref-5","doi-asserted-by":"publisher","first-page":"297-300","DOI":"10.1080\/02688690410001732797","article-title":"Posterior fossa subdural hygroma with supratentorial chronic subdural haematoma.","volume":"18","author":"S Kabir","year":"2004","journal-title":"Br J Neurosurg."},{"key":"ref-6","doi-asserted-by":"publisher","first-page":"752-5","DOI":"10.3171\/jns.2005.103.4.0752","article-title":"Acute obstructive hydrocephalus associated with infratentorial subdural hygromas complicating Chiari malformation Type I decompression. Report of two cases and literature review.","volume":"103","author":"L Marshman","year":"2005","journal-title":"J Neurosurg."},{"key":"ref-7","doi-asserted-by":"publisher","first-page":"81-4","DOI":"10.1227\/00006123-198807000-00013","article-title":"Posterior fossa subdural effusion due to head trauma.","volume":"23","author":"T Nishizaki","year":"1988","journal-title":"Neurosurgery."},{"key":"ref-8","doi-asserted-by":"publisher","first-page":"331-5","DOI":"10.1007\/s10143-008-0129-5","article-title":"Acute external hydrocephalus complicating craniocervical decompression for syringomyelia-Chiari I complex: case report and review of the literature.","volume":"31","author":"P Perrini","year":"2008","journal-title":"Neurosurg Rev."},{"key":"ref-9","doi-asserted-by":"publisher","first-page":"476-81","DOI":"10.3109\/02688697.2011.650738","article-title":"Raised intracranial pressure and hydrocephalus following hindbrain decompression for Chiari I malformation: a case series and review of the literature.","volume":"26","author":"R Zakaria","year":"2012","journal-title":"Br J Neurosurg."},{"key":"ref-10","doi-asserted-by":"publisher","first-page":"301-3","DOI":"10.1080\/02688699650040188","article-title":"Symptomatic subdural hygroma as a complication of foramen magnum decompression for hindbrain herniation (Arnold-Chiari deformity).","volume":"10","author":"A Ranjan","year":"1996","journal-title":"Br J Neurosurg."}],"container-title":["F1000Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/f1000research.com\/articles\/5-33\/v1\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/f1000research.com\/articles\/5-33\/v1\/pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/f1000research.com\/articles\/5-33\/v1\/iparadigms","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2018,12,5]],"date-time":"2018-12-05T14:05:59Z","timestamp":1544018759000},"score":1,"resource":{"primary":{"URL":"https:\/\/f1000research.com\/articles\/5-33\/v1"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,1,7]]},"references-count":10,"URL":"https:\/\/doi.org\/10.12688\/f1000research.7627.1","relation":{"has-review":[{"id-type":"doi","id":"10.5256\/f1000research.8213.r13971","asserted-by":"subject"},{"id-type":"doi","id":"10.5256\/f1000research.8213.r12295","asserted-by":"subject"},{"id-type":"doi","id":"10.5256\/f1000research.8213.r12295","asserted-by":"object"},{"id-type":"doi","id":"10.5256\/f1000research.8213.r13971","asserted-by":"object"}]},"ISSN":["2046-1402"],"issn-type":[{"value":"2046-1402","type":"electronic"}],"subject":[],"published":{"date-parts":[[2016,1,7]]},"assertion":[{"value":"Indexed","URL":"https:\/\/f1000research.com\/articles\/5-33\/v1#article-reports","order":0,"name":"referee-status","label":"Referee status","group":{"name":"current-referee-status","label":"Current Referee Status"}},{"value":"10.5256\/f1000research.8213.r12295, Lekhjung Thapa, Department of Neurology, National Institute of Neurological and Allied Sciences, Kathmandu, Nepal, 29 Feb 2016, version 1, indexed","URL":"https:\/\/f1000research.com\/articles\/5-33\/v1#referee-response-12295","order":0,"name":"referee-response-12295","label":"Referee Report","group":{"name":"article-reports","label":"Article Reports"}},{"value":"10.5256\/f1000research.8213.r13971, Murat\u00a0\u015eakir Ek\u015fi, Department of Orthopedic Surgery, Spine Center, University of California, San Francisco, San Francisco, CA, USA, 25 May 2016, version 1, indexed","URL":"https:\/\/f1000research.com\/articles\/5-33\/v1#referee-response-13971","order":1,"name":"referee-response-13971","label":"Referee Report","group":{"name":"article-reports","label":"Article Reports"}},{"value":"The author(s) declared that no grants were involved in supporting this work","order":2,"name":"grant-information","label":"Grant Information"},{"value":"This is an open access article distributed under the terms of the Creative Commons Attribution Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.","order":0,"name":"copyright-info","label":"Copyright"}]}}