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

Details

Serval ID
serval:BIB_7AC95D083C91
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Colloid cysts of the third ventricle: correlation of MR and CT findings with histology and chemical analysis.
Journal
AJR: American journal of roentgenology
Author(s)
Maeder P.P., Holtås S.L., Basibüyük L.N., Salford L.G., Tapper U.A., Brun A.
ISSN
0361-803X
Publication state
Published
Issued date
1990
Peer-reviewed
Oui
Volume
155
Number
1
Pages
135-141
Language
english
Notes
--- Old month value: Jul
Abstract
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 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.
Keywords
Adult, Aged, Brain Diseases/diagnosis, Calcium/analysis, Cerebral Ventricles/pathology, Cerebral Ventriculography, Cysts/analysis, Cysts/diagnosis, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Tomography, X-Ray Computed
Pubmed
Web of science
Create date
11/04/2008 8:23
Last modification date
20/08/2019 14:36
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