Colloid cysts of the third ventricle: correlation of MR and CT findings with histology and chemical analysis.

Détails

ID Serval
serval:BIB_FD317AB15D5A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Colloid cysts of the third ventricle: correlation of MR and CT findings with histology and chemical analysis.
Périodique
AJNR. American journal of neuroradiology
Auteur⸱e⸱s
Maeder P.P., Holtås S.L., Basibüyük L.N., Salford L.G., Tapper U.A., Brun A.
ISSN
0195-6108
Statut éditorial
Publié
Date de publication
1990
Peer-reviewed
Oui
Volume
11
Numéro
3
Pages
575-581
Langue
anglais
Résumé
Eight patients with colloid cysts of the third ventricle were examined with CT and MR. In six, surgical resection was performed and the material was subjected to histologic evaluation; the concentrations of trace elements were determined by particle-induced X-ray emission. Stereotaxic aspiration was performed in two. The investigation showed that colloid cysts are often iso- or hypodense relative to brain on CT (5/8), but sometimes have a center of increased density. Increased density did not correlate with increased concentration of calcium or other metals but did not correlate with high cholesterol content. Colloid cysts appear more heterogeneous on MR (6/8) than on CT (3/8), despite a homogeneous appearance at histology. High signal on short TR/TE sequences is correlated with a high cholesterol content. A marked shortening of the T2 relaxation time is often noticed in the central part of the cyst. Analysis of trace elements showed that this phenomenon is not related to the presence of metals with paramagnetic effects. Our analysis of the contents of colloid cysts does not support the theory that differing metallic concentrations are responsible for differences in MR signal intensity or CT density. We did find that increased CT density and high MR signal correlated with high cholesterol content.
Mots-clé
Adult, Aged, Brain Diseases/metabolism, Brain Diseases/pathology, Cerebral Ventricles/pathology, Cerebral Ventriculography, Cholesterol/analysis, Cysts/metabolism, Cysts/pathology, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Tomography, X-Ray Computed, Trace Elements/analysis
Pubmed
Web of science
Création de la notice
22/06/2009 12:51
Dernière modification de la notice
20/08/2019 17:28
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