CT and MRI 'ring sign' may be due to demyelination: diagnostic pitfall.
We report a case of acute demyelinating encephalomyelitis (ADEM) in which both CT and MRI showed multiple ring-enhancing lesions suggestive of abscesses or brain tumour. This is a relatively rare phenomenon.
Kamel
M H
MH
Neurosurgery Department, Cork University Hospital, Republic of Ireland. mahmoudhamdy@yahoo.com
Kelleher
M
M
O'Riordan
C
C
Keohane
C
C
O'Sullivan
M
M
D000328:Adult; D001706:Biopsy; D001921:Brain / Q000000981:diagnostic imaging / Q000473:pathology; D020278:Demyelinating Autoimmune Diseases, CNS / Q000175:diagnosis* / Q000188:drug therapy / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D013238:Stereotaxic Techniques; D014057:Tomography, X-Ray Computed