title: Enlarging subependymal cyst: case report.
abstract: A 1-month-old infant with a Dandy-Walker malformation underwent the placement of a ventriculoperitoneal shunt to treat progressive hydrocephalus. On the initial computed tomographic scan, a subependymal cystic lesion larger than 1 cm in diameter was noted in the head of the right caudate nucleus, which enlarged to 3 cm in diameter on follow-up imaging studies over the course of a year. Biopsies taken at the time of fenestration failed to show the presence of neoplasia. This appears to be the first reported case of a cyst of this nature to show progressive enlargement.
authors.affiliation: Division of Neurosurgery, Children's Hospital Los Angeles, California, USA.
authors.forename: C H
authors.initials: CH
authors.lastname: Rabb
authors.forename: M L
authors.initials: ML
authors.lastname: Levy
authors.forename: J G
authors.initials: JG
authors.lastname: McComb
authors.forename: J A
authors.initials: JA
authors.lastname: Feigenbaum
mesh_terms: D001706:Biopsy; D002421:Caudate Nucleus / Q000473:pathology; D002552:Cerebral Ventricles / Q000473:pathology; D003560:Cysts / Q000175:diagnosis* / Q000473:pathology; D003616:Dandy-Walker Syndrome / Q000175:diagnosis* / Q000601:surgery; D004805:Ependyma / Q000473:pathology; D005500:Follow-Up Studies; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis* / Q000601:surgery; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis / Q000473:pathology; D017287:Ventriculoperitoneal Shunt