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MR Imaging of the Cauda Equina in Hereditary Motor Sensory Neuropathies: Correlations with Sural Nerve Biopsy AJNR 21:1793-1798,1779, Cellerini,M.,et al, 2000 See this aricle in Pubmed Article Abstract In patients with HMSN enhancement of intradural spinal nerve roots, whether or not associated with marked thickening, may be found on lumbosacral MR examinations. Spinal nerve root thickening may be responsible for atypical symptoms, and it s visibility on MR images represents a useful adjunct to diagnosis. Lumbosacral spinal nerve root abnormalities were related to an extremely high number of onion bulbs (indicating active demyelination) at sural nerve biopsy. Nerve root enhancement does not seem to be related to inflammatory infiltrates.

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