Arachnoid cyst - spinal
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CSF intensity space anterior to the cervical cord is associated with distortion of the cord. Prominent CSF flow signal artefact is seen within the abnormality, consistent with a spinal arachnoid cyst.
Spinal arachnoid cysts located mostly anterior to the spinal cord is unusual; most spinal arachnoid cysts are in the thoracic region and located posterior to the cord.