Nucleus Polposus Embolism Causing Anterior Spinal Artery Occlusion: A Rare but Possible Cause of Fibrocartilaginous Embolic Myelopathy

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Figure 1
Sagittal images of the spine showing intramedullary hyperintensity extending from T5 to conus region with mild cord edema on T2 and short T1 inversion recovery images (a–c) that is isointense on T1 (d).
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Figure 2
Axial T2 magnetic resonance image at T4–T5 showing left-sided paracentral disc protrusion indenting the thecal sac (a). There is predominant involvement of the anterior part of the cord in anterior spinal artery distribution, also seen at T5–T6 (b) and T10–T11 (c).
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Figure 3
Postgadolinium sagittal MRI of the spine showing no abnormal cord enhancement and no evidence of leptomeningeal enhancement, ruling out inflammatory etiology.
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Figure 4
An algorithmic approach to diagnosing fibrocartilaginous embolic myelopathy.