| Phase-contrast cine MRI revealing en valve mechanism in spontaneous third ventriculostomy: report of a case and literature review. | |
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MedLine Citation:
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PMID: 20619532 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A 50-year-old epileptic woman affected by hydrocephalus due to aqueductal stenosis was admitted to the hospital because of headache, dysarthria, and mild lateral pulsion. Cranial computed tomography (CT) revealed left cerebellar hemorrhage. Subsequent magnetic resonance imaging (MRI) of the brain demonstrated an enlarged ventricular system unchanged from prior studies. Flow-sensitive phase-contrast (PC) cine magnetic resonance imaging showed flow absence through the aqueduct and flow pulsations through the third ventricle floor in systole and diastole, consistent with spontaneous third ventricle patency. On stationary tissue images, the third ventricle floor and the mamillary body were displaced downward at systole and upward at diastole. Stenosis of the cerebral aqueduct of Sylvius was also shown. Retrospective evaluation of the sagittal T2-weighted images disclosed flow void at the level of the third ventricle floor. On-off movements of the third ventricle floor could account for chronic hydrocephalus persistence by an en valve mechanism. Spontaneous third ventriculostomy (STV) was diagnosed on the basis of these findings. STV is a rare condition occurring in chronic obstructive hydrocephalus patients as a result of longstanding pulsations against the walls of the third ventricle, the floor in particular. We reviewed the literature to establish which imaging and clinical findings could improve the identification of STV in patients affected by obstructive hydrocephalus. |
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Authors:
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Ariel Bailey; Nicolò Pipitone; Giulio Zuccoli |
Publication Detail:
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Type: Case Reports; Journal Article Date: 2010-07-08 |
Journal Detail:
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Title: Clinical neurology and neurosurgery Volume: 112 ISSN: 1872-6968 ISO Abbreviation: Clin Neurol Neurosurg Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-10-11 Completed Date: 2011-02-08 Revised Date: 2011-10-05 |
Medline Journal Info:
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Nlm Unique ID: 7502039 Medline TA: Clin Neurol Neurosurg Country: Netherlands |
Other Details:
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Languages: eng Pagination: 817-20 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier B.V. All rights reserved. |
Affiliation:
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Department of Radiology, Children's Hospital of Pittsburgh of University of Pittsburgh Medical Center, Pittsburgh, PA 15224, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Cerebral Aqueduct
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pathology* Cerebral Ventricles / pathology* Constriction, Pathologic Epilepsy / complications Female Humans Hydrocephalus / pathology* Magnetic Resonance Imaging Magnetic Resonance Imaging, Cine Mamillary Bodies / pathology Middle Aged Third Ventricle / pathology Tomography, X-Ray Computed Ventriculostomy / adverse effects, methods |
| Comments/Corrections | |
Comment In:
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Clin Neurol Neurosurg. 2011 Oct;113(8):700-2
[PMID:
21641716
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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