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Abstract

Frequency of unexplained meningeal enhancement in the brain after lumbar puncture.

R L Mittl and D M Yousem
American Journal of Neuroradiology April 1994, 15 (4) 633-638;
R L Mittl Jr
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
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D M Yousem
Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia 19104.
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Abstract

PURPOSE To examine the hypothesis that lumbar puncture alone may cause meningeal enhancement in the brain.

METHODS We prospectively reviewed the brain MR examinations of all patients from a 6-month period who were studied within 1 month after lumbar puncture. We also retrospectively reviewed all cases of dural-arachnoidal enhancement in the brain from the preceding 18-month period.

RESULTS In the prospective group, only one case out of 97 enhanced brain MR examinations after lumbar puncture did not have a clear cause for dural-arachnoidal enhancement. In the retrospective group, only one case out of 11 with enhancement was not clearly explained.

CONCLUSIONS Dural-arachnoidal enhancement in the brain after lumbar puncture is uncommon, if it occurs at all, and lumbar puncture as a cause of enhancement should be considered a rare diagnosis of exclusion.

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American Journal of Neuroradiology
Vol. 15, Issue 4
1 Apr 1994
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R L Mittl, D M Yousem
Frequency of unexplained meningeal enhancement in the brain after lumbar puncture.
American Journal of Neuroradiology Apr 1994, 15 (4) 633-638;

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Frequency of unexplained meningeal enhancement in the brain after lumbar puncture.
R L Mittl, D M Yousem
American Journal of Neuroradiology Apr 1994, 15 (4) 633-638;
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