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  • Title: Delayed cauda equina syndrome by nerve root incarceration after caudal epidural block: A case report.
    Author: Lim DJ, Kim HT.
    Journal: Int J Surg Case Rep; 2022 Oct; 99():107662. PubMed ID: 36122424.
    Abstract:
    INTRODUCTION AND IMPORTANCE: Caudal epidural block has been commonly practiced in recent years and is used for management of pain before surgery and chronic back pain in adult spine diseases. CASE PRESENTATION: A 58-year-old man visited the outpatient clinic complaining of recently aggravated severe low back pain, saddle anesthesia, and unbearable radiating pain in his left leg, with a previous history of caudal epidural block. He had problems with bladder and bowel function. Emergency exploration for cauda equina syndrome (CES) was performed. Decompression, extradural herniation, and entrapment of a cauda equina filament through a dural defect were observed, and surgical reduction with dural repair was performed. CLINICAL DISCUSSION: The clinical signs at onset suggested cauda equina dysfunction after caudal epidural block. Magnetic resonance imaging showed spinal canal stenosis with a paracentral herniated intervertebral disc at the L4-L5 level without any other dural or nerve root abnormality. Exploration was the only option to identify the lesion. CONCLUSION: This is the first case report of CES caused by extradural nerve root herniation and strangulation after caudal epidural block.
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