What question did this study set out to answer?

To describe a rare case of spontaneous perineural hematoma around the lumbar nerve root presenting as radiculopathy.

Spontaneous perineural hematoma of a lumbar nerve root presenting as radiculopathy successfully treated with needle aspiration: illustrative case

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To describe a rare case of spontaneous perineural hematoma around the lumbar nerve root presenting as radiculopathy.
35-year-old woman with acute right L5 radiculopathy underwent MRI which showed a septated cystic lesion near the L5 nerve root.
Fluoroscopy-guided aspiration of the hematoma was performed, and symptoms were immediately relieved.
A repeat aspiration was done 10 days later due to recurrence, resulting in rapid recovery.
Initial aspiration yielded dark red hematoma and immediate symptom relief.
Repeat aspiration of xanthochromic fluid led to a quick recovery after recurrence.
No further recurrence was observed during 3 years of follow-up.

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Illustrative case shows successful treatment of acute radiculopathy in a patient with perineural hematoma, suggesting a novel management approach.

Yokosuka et al. (2026) studied this question.

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Illustrative case shows successful treatment of acute radiculopathy in a patient with perineural hematoma, suggesting a novel management approach.