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MR imaging of intradural extramedullary tumors

Li, M H; Holtås, Stig LU and Larsson, E M (1992) In Acta Radiologica 33(3). p.207-212
Abstract
Thirty-one consecutive intradural extramedullary spinal tumors examined with MR at 0.3 T were reviewed. In 13 of the patients myelography had been performed. There were 11 patients with meningeoma, 14 with neuroma, one ependymoma, 3 metastases, and 2 lipomas. All tumors were surgically removed and verified by histology. The intradural extramedullary location of the tumors was accurately assessed by MR imaging in all patients and by myelography in 10 of 13. The MR diagnoses were in accordance with the histologic findings in 74% of cases. Compression of the spinal cord or cauda equina with widening of the subarachnoid space above and below the mass or outward displacement of epidural fat was characteristic of the intradural extramedullary... (More)
Thirty-one consecutive intradural extramedullary spinal tumors examined with MR at 0.3 T were reviewed. In 13 of the patients myelography had been performed. There were 11 patients with meningeoma, 14 with neuroma, one ependymoma, 3 metastases, and 2 lipomas. All tumors were surgically removed and verified by histology. The intradural extramedullary location of the tumors was accurately assessed by MR imaging in all patients and by myelography in 10 of 13. The MR diagnoses were in accordance with the histologic findings in 74% of cases. Compression of the spinal cord or cauda equina with widening of the subarachnoid space above and below the mass or outward displacement of epidural fat was characteristic of the intradural extramedullary tumors. The signal intensity of meningeoma as well as of neuroma was slightly lower or equal to that of the cord on T1-weighted images, and equal to or higher than cord signal on T2-weighted images. Neuroma had a lower signal intensity on T1-weighted images and a higher signal intensity on T2-weighted images than meningeoma. Meningeoma appeared more homogeneous than neuroma and had a broad base towards the dura. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acta Radiologica
volume
33
issue
3
pages
207 - 212
publisher
John Wiley & Sons
external identifiers
  • pmid:1591121
  • scopus:0026519119
ISSN
1600-0455
language
English
LU publication?
yes
id
af483af1-585a-4f74-a9b0-8c23e3c4e5ab (old id 1106571)
date added to LUP
2008-08-04 10:23:13
date last changed
2017-01-01 06:50:56
@article{af483af1-585a-4f74-a9b0-8c23e3c4e5ab,
  abstract     = {Thirty-one consecutive intradural extramedullary spinal tumors examined with MR at 0.3 T were reviewed. In 13 of the patients myelography had been performed. There were 11 patients with meningeoma, 14 with neuroma, one ependymoma, 3 metastases, and 2 lipomas. All tumors were surgically removed and verified by histology. The intradural extramedullary location of the tumors was accurately assessed by MR imaging in all patients and by myelography in 10 of 13. The MR diagnoses were in accordance with the histologic findings in 74% of cases. Compression of the spinal cord or cauda equina with widening of the subarachnoid space above and below the mass or outward displacement of epidural fat was characteristic of the intradural extramedullary tumors. The signal intensity of meningeoma as well as of neuroma was slightly lower or equal to that of the cord on T1-weighted images, and equal to or higher than cord signal on T2-weighted images. Neuroma had a lower signal intensity on T1-weighted images and a higher signal intensity on T2-weighted images than meningeoma. Meningeoma appeared more homogeneous than neuroma and had a broad base towards the dura.},
  author       = {Li, M H and Holtås, Stig and Larsson, E M},
  issn         = {1600-0455},
  language     = {eng},
  number       = {3},
  pages        = {207--212},
  publisher    = {John Wiley & Sons},
  series       = {Acta Radiologica},
  title        = {MR imaging of intradural extramedullary tumors},
  volume       = {33},
  year         = {1992},
}