American Journal of Neuroradiology, Vol 14, Issue 2 401-404, Copyright © 1993 by American Society of Neuroradiology
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Intradural lumbar disk fragment with ring enhancement on MR
R Wasserstrom, AC Mamourian, JF Black and RA Lehman
Department of Radiology, Milton S. Hershey Medical Center, Pennsylvania State University Hospital, Hershey 17033.
Intradural extension of a herniated intervertebral disk, an unusual complication of a common disease, may mimic an intradural tumor on MR. A case of a pathologically proved subdural disk fragment is presented; MR findings that suggested the correct diagnosis were: proximity of intervertebral disk disease; whorl-like mixed intensity on T2-weighted images; poor visualization of the mass on unenhanced T1-weighted images; and marked ring enhancement following administration of gadolinium.
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