Cauda equina arachnoiditis – a rare manifestation of West Nile virus neuroinvasive disease: A case report

Figure 1 Lumbosacral magnetic resonance imaging scan with intravenous Gadolinium administration in a patient with West Nile virus encephalitis and acute flaccid paresis. A: Lumbar spine, midsagittal magnetic resonance, contrast-enhanced T1 fat saturation weighted image demonstrated no extrinsic compression, abnormal signal, or enhancement of the lower part of the spinal cord. There was a marked enhancement of the ventral nerve roots of the cauda equina (orange arrows); B: Sagittal contrast-enhanced T1 fat saturation weighted through the region of the cauda equina shows abnormal – prominent enhancement of the nerve roots (orange arrows).