Dandy-Walker cyst upward herniation: the role of magnetic resonance imaging and double shunts.

Abstract

Upward transtentorial herniation of a Dandy-Walker cyst is a potentially fatal complication, particularly after solitary shunting of the lateral ventricle for associated hydrocephalus. Two patients with upward transtentorial herniation of their Dandy-Walker cysts are presented to illustrate the diagnostic value of magnetic resonance (MR) imaging with the demonstration of unique 'keyhole' and 'snail' signs on the axial and sagittal MR images, respectively. In both patients, double and simultaneous shunting en-Y of a lateral ventricle and the posterior fossa cyst resulted in the resolution of the herniation syndrome.

• Authors: P Pillay, G H Barnett, C Lanzeiri, R Cruse
• Journal: Pediatric neuroscience (Pediatr Neurosci) Vol. 15 Issue 2 Pg. 74-8; discussion 78-9 ( 1989) ISSN: 0255-7975 [Print] Switzerland
• PMID: 2635299 (Publication Type: Case Reports, Journal Article)

Topics

• Cerebrospinal Fluid Shunts
• Child
• Dandy-Walker Syndrome (complications, diagnosis, surgery)
• Encephalocele (diagnosis, etiology, surgery)
• Humans
• Hydrocephalus (complications)
• Magnetic Resonance Imaging
• Male