{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,9]],"date-time":"2026-06-09T22:34:44Z","timestamp":1781044484631,"version":"3.54.1"},"reference-count":24,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T00:00:00Z","timestamp":1702598400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Surg."],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Hydrocephalus is a brain abnormality frequently encountered in neonates. There are several known etiologies of hydrocephalus, which can be classified as either congenital or acquired. Occlusion of the foramen of Monro (FOM) is a cause of hydrocephalus and can be either congenital or secondary to various disorders. Idiopathic obstruction of the FOM presenting as prenatal ventriculomegaly is extremely rare but has been reported.<\/jats:p><\/jats:sec><jats:sec><jats:title>Case presentation<\/jats:title><jats:p>We present the case of a preterm newborn with severe bilateral hydrocephalus due to FOM occlusion in the prenatal period. Although the neonate had normal head circumference and no clinical symptoms after birth, brain sonography revealed progressive ventriculomegaly. Further image revealed bilateral ventriculomegaly with normal-sized third and fourth ventricles. We suspected a complete obstruction of the right and a partial obstruction of the left of the FOM. The neonate underwent endoscopic septostomy and foraminotomy, resulting in improvement.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>We report a case of preterm FOM occlusion in the youngest and smallest neonate to date. Endoscopic septostomy and foraminotomy were performed in order to avoid ventriculoperitoneal shunt-related complications, highlighting the viability of endoscopic procedures which should be the primary treatment in preterm neonates with FOM occlusion.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fsurg.2023.1257679","type":"journal-article","created":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T10:05:22Z","timestamp":1702634722000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":1,"title":["Case Report: Occlusion of the foramen of Monro treated with endoscopic septostomy and foraminotomy in a preterm neonate"],"prefix":"10.3389","volume":"10","author":[{"given":"Po-Yu","family":"Lai","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Hao","family":"Li","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming-Tao","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pao-Hui","family":"Feng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chi-Man","family":"Kuok","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2023,12,15]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","first-page":"340","DOI":"10.1002\/uog.21974","article-title":"Role of prenatal magnetic resonance imaging in fetuses with isolated mild or moderate ventriculomegaly in the era of neurosonography: international multicenter study","volume":"56","year":"2020","journal-title":"Ultrasound Obstet Gynecol"},{"key":"B2","doi-asserted-by":"publisher","first-page":"788","DOI":"10.1016\/S0140-6736(15)60694-8","article-title":"Hydrocephalus in children","volume":"387","author":"Kahle","year":"2016","journal-title":"Lancet"},{"key":"B3","doi-asserted-by":"publisher","first-page":"1319","DOI":"10.1080\/02688697.2020.1866167","article-title":"Idiopathic membranous occlusion of the foramen of Monro: an unusual cause of hydrocephalus and headache in adults","volume":"37","author":"Chin","year":"2023","journal-title":"Br J Neurosurg"},{"key":"B4","doi-asserted-by":"publisher","first-page":"286","DOI":"10.1159\/000070412","article-title":"Results of endoscopic septal fenestration in the treatment of isolated ventricular hydrocephalus","volume":"38","author":"Aldana","year":"2003","journal-title":"Pediatr Neurosurg"},{"key":"B5","doi-asserted-by":"publisher","first-page":"707","DOI":"10.1007\/s00381-017-3671-z","article-title":"Congenital obstruction of foramen of Monro: report of 10 patients and literature review","volume":"34","author":"Shahjouei","year":"2018","journal-title":"Childs Nerv Syst"},{"key":"B6","doi-asserted-by":"publisher","first-page":"369","DOI":"10.7863\/jum.1983.2.8.369","article-title":"Demonstration of unilateral hydrocephalus in utero","volume":"2","author":"Hartung","year":"1983","journal-title":"J Ultrasound Med"},{"key":"B7","doi-asserted-by":"publisher","first-page":"328","DOI":"10.1007\/BF02467306","article-title":"Perinatal unilateral hydrocephalus. Atresia of the foramen of monro","volume":"19","author":"Gaston","year":"1989","journal-title":"Pediatr Radiol"},{"key":"B8","doi-asserted-by":"publisher","first-page":"367","DOI":"10.1007\/BF00271895","article-title":"Congenital unilateral hydrocephalus","volume":"5","author":"Nakamura","year":"1989","journal-title":"Childs Nerv Syst"},{"key":"B9","doi-asserted-by":"publisher","first-page":"359","DOI":"10.2214\/ajr.156.2.1898814","article-title":"Unilateral hydrocephalus: prenatal sonographic diagnosis","volume":"156","author":"Patten","year":"1991","journal-title":"AJR Am J Roentgenol"},{"key":"B10","doi-asserted-by":"publisher","first-page":"69","DOI":"10.1007\/BF02020232","article-title":"Prenatal diagnosis of unilateral hydrocephalus","volume":"23","author":"Anderson","year":"1993","journal-title":"Pediatr Radiol"},{"key":"B11","doi-asserted-by":"publisher","first-page":"66","DOI":"10.1016\/0887-8994(95)00256-1","article-title":"Nonprogressive congenital unilateral ventriculomegaly","volume":"14","author":"Tsao","year":"1996","journal-title":"Pediatr Neurol"},{"key":"B12","doi-asserted-by":"publisher","first-page":"319","DOI":"10.1007\/s002470050138","article-title":"Prenatal diagnosis of congenital unilateral hydrocephalus","volume":"27","author":"Koga","year":"1997","journal-title":"Pediatr Radiol"},{"key":"B13","doi-asserted-by":"publisher","first-page":"350","DOI":"10.1002\/(sici)1096-8628(19970131)68:3%3C350::aid-ajmg19%3E3.0.co;2-s","article-title":"Bilateral sensorineural deafness and hydrocephalus due to foramen of Monro obstruction in sibs: a newly described autosomal recessive disorder","volume":"68","author":"Chudley","year":"1997","journal-title":"Am J Med Genet"},{"key":"B14","doi-asserted-by":"publisher","first-page":"327","DOI":"10.1046\/j.1469-0705.1999.14050327.x","article-title":"Prenatal diagnosis and follow-up of 14 cases of unilateral ventriculomegaly","volume":"14","author":"Senat","year":"1999","journal-title":"Ultrasound Obstet Gynecol"},{"key":"B15","doi-asserted-by":"publisher","first-page":"161","DOI":"10.1016\/S0720-048X(00)00181-9","article-title":"Congenital unilateral hydrocephalus\u2013CT findings","volume":"36","author":"Schulman","year":"2000","journal-title":"Eur J Radiol"},{"key":"B16","doi-asserted-by":"publisher","first-page":"263","DOI":"10.7863\/jum.2001.20.3.263","article-title":"Postnatal outcome of fetuses with the prenatal diagnosis of asymmetric hydrocephalus","volume":"20","author":"Durfee","year":"2001","journal-title":"J Ultrasound Med"},{"key":"B17","doi-asserted-by":"publisher","first-page":"2530","DOI":"10.1016\/j.radcr.2021.06.011","article-title":"Prenatal diagnosis and postnatal management of congenital unilateral hydrocephalus for stenosis of the foramen of Monro","volume":"16","author":"Spennato","year":"2021","journal-title":"Radiol Case Rep"},{"key":"B18","doi-asserted-by":"publisher","first-page":"16","DOI":"10.1016\/j.jpeds.2020.07.079","article-title":"Management of post-hemorrhagic ventricular dilatation in the infant born preterm","volume":"226","author":"El-Dib","year":"2020","journal-title":"J Pediatr"},{"key":"B19","doi-asserted-by":"publisher","first-page":"143","DOI":"10.1055\/s-0029-1220713","article-title":"Unilateral hydrocephalus due to idiopathic anomaly of foramen of Monro, treated successfully with endoscopic technique. Report of three cases","volume":"71","author":"Sharifi","year":"2010","journal-title":"Cent Eur Neurosurg"},{"key":"B20","doi-asserted-by":"publisher","first-page":"e13506","DOI":"10.7759\/cureus.13506","article-title":"Early complications of ventriculoperitoneal shunt in pediatric patients with hydrocephalus","volume":"13","author":"Khan","year":"2021","journal-title":"Cureus"},{"key":"B21","doi-asserted-by":"publisher","first-page":"155","DOI":"10.4103\/0971-9261.207624","article-title":"Pediatric ventriculoperitoneal shunts and their complications: an analysis","volume":"22","author":"Agarwal","year":"2017","journal-title":"J Indian Assoc Pediatr Surg"},{"key":"B22","doi-asserted-by":"publisher","first-page":"e610","DOI":"10.1016\/j.wneu.2018.04.117","article-title":"Endoscopic strategy in surgical treatment of adult idiopathic bilateral occlusion of the foramen of Monro and review of the literature","volume":"115","author":"Ebrahimzadeh","year":"2018","journal-title":"World Neurosurg"},{"key":"B23","doi-asserted-by":"publisher","first-page":"3541","DOI":"10.1007\/s00381-021-05272-y","article-title":"Neuroendoscopic surgery in neonates\u2014indication and results over a 10-year practice","volume":"37","author":"Schaumann","year":"2021","journal-title":"Childs Nerv Syst"},{"key":"B24","doi-asserted-by":"publisher","first-page":"1517","DOI":"10.1007\/s00701-012-1381-6","article-title":"Endoscopic septostomy through a standard precoronal ventricular access: feasibility and effectiveness","volume":"154","author":"Tamburrini","year":"2012","journal-title":"Acta Neurochir (Wien)"}],"container-title":["Frontiers in Surgery"],"original-title":[],"link":[{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fsurg.2023.1257679\/full","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,12,15]],"date-time":"2023-12-15T10:05:24Z","timestamp":1702634724000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.frontiersin.org\/articles\/10.3389\/fsurg.2023.1257679\/full"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,12,15]]},"references-count":24,"alternative-id":["10.3389\/fsurg.2023.1257679"],"URL":"https:\/\/doi.org\/10.3389\/fsurg.2023.1257679","relation":{},"ISSN":["2296-875X"],"issn-type":[{"value":"2296-875X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,12,15]]},"article-number":"1257679"}}