Abstract
Space-occupying lesions in the spinal cord may be caused by tumors, cavernous vascular malformations, ischemic disease, infections and inflammatory diseases, as in acute disseminating encephalomyelitis, transverse myelitis and acute multiple sclerotic (MS) plaques [l]. Of the latter, it is known that the spinal cord is one of the predilection sites. Magnetic resonance imaging (MRI) is the first imaging technique to provide reproducible direct visualisation of plaques in the central nervous system [2]. Since 1984 several reports on MRI of MS plaques and transverse myelitis in the spinal cord have been published [3-81. The contracting cord sign, an indication of a decreased diameter of a previously enlarged spinal cord, which may accompany spinal cord MS lesions, has been demonstrated on myelography [9]. However, to our knowledge, only two reports exist in which the contracting cord sign has been demonstrated on MRI [3,8]; one report describing an adult patient with multiple sclerosis [3], the other describing an adult with acute transverse myelitis [8].
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