title: Massive intracranial arachnoid cyst in a developmentally normal infant: case report and literature review.
abstract: Intracranial arachnoid cysts are developmental anomalies that are generally asymptomatic. We describe a 6-month-old boy with macrocephaly but normal neurological development who was found to have a rare, massive basal arachnoid cyst occupying most of the cranium and extending superiorly, causing significant shift due to mass effect. A cystoperitoneal shunt was placed, producing both a decrease in the arachnoid cyst dimensions and a concomitant reexpansion of parenchyma. After consideration of various management options, such a shunt system appears to offer a low risk of complications and a high likelihood of success.
authors.affiliation: Department of Neurology, Harlem Hospital Center, New York, USA.
authors.forename: T B
authors.initials: TB
authors.lastname: Mason
authors.forename: C A
authors.initials: CA
authors.lastname: Chiriboga
authors.forename: N A
authors.initials: NA
authors.lastname: Feldstein
authors.forename: K
authors.initials: K
authors.lastname: Kartha
authors.forename: A G
authors.initials: AG
authors.lastname: Khandji
mesh_terms: D016080:Arachnoid Cysts / Q000151:congenital* / Q000175:diagnosis / Q000601:surgery; D001921:Brain / Q000473:pathology; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D009460:Neurologic Examination; D011183:Postoperative Complications / Q000175:diagnosis; D014057:Tomography, X-Ray Computed; D017287:Ventriculoperitoneal Shunt