Document Detail

Anatomical variants in the floor of the third ventricle; implications for endoscopic third ventriculostomy.
MedLine Citation:
PMID:  10990519     Owner:  NLM     Status:  MEDLINE    
Longstanding hydrocephalus and raised intracranial pressure can lead to unusual anatomical variants in the floor of the third ventricle, which may be important when performing endoscopic third ventriculostomy. Two middle aged patients with symptomatic longstanding hydrocephalus had scans that showed ventricular hydrocephalus, an empty sella, and a dilated infundibular recess which herniated into the sella turcica. Endoscopic third ventriculostomy confirmed that instead of the tuber cinerum and infundibular recess, the anterior inferior floor of the third ventricle was hanging down ventral to the pons into the sellar floor. Third ventriculostomy to the prepontine cistern was made on the dorsal wall of the dilated infundibular recess to the area surrounded by the dorsum sellae, the basilar artery trunk, and the left superior cerebellar artery, with good symptomatic control. Association of the empty sella and persistence of the infundibular recess must be carefully evaluated by MRI before attempting endoscopic third ventriculostomy. Herniation of the anterior inferior floor of the third ventricle into the empty sella can lead to loss of anatomical landmarks that require special attention during third ventriculostomy.
N Morota; T Watabe; T Inukai; K Hongo; H Nakagawa
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of neurology, neurosurgery, and psychiatry     Volume:  69     ISSN:  0022-3050     ISO Abbreviation:  J. Neurol. Neurosurg. Psychiatr.     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2000-10-06     Completed Date:  2000-11-02     Revised Date:  2008-11-20    
Medline Journal Info:
Nlm Unique ID:  2985191R     Medline TA:  J Neurol Neurosurg Psychiatry     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  531-4     Citation Subset:  IM    
Department of Neurological Surgery, Aichi Medical University, Nagakute-cho, Aichi-gun, Aichi 480-1195, Japan.
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MeSH Terms
Headache / pathology*
Magnetic Resonance Imaging
Neurofibromatosis 1 / pathology*
Third Ventricle / pathology*
Ventriculostomy / methods*

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