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  • Title: A Successful Outcome Despite Delayed Intervention for Cauda Equina Syndrome in a Young Patient with a Posterior Epidural Disc Extrusion.
    Author: Mugge L, Caras A, Miller W, Buehler M, Medhkour A.
    Journal: Cureus; 2019 May 11; 11(5):e4645. PubMed ID: 31312571.
    Abstract:
    Epidural disc extrusion is extremely rare and may cause cauda equina syndrome. This is a surgical emergency and needs rapid decompression. Although cauda equina is commonly caused by disc herniation, this is an unusual presentation with epidural disc extrusion. We present a very rare case of Cauda Equina syndrome, resulting from an epidural disc extrusion at L3-L4 level. Patient care and progress notes were reviewed along with pre-, post-, and intra-operative radiological imaging. Here, a 19-year-old male with a past medical history of type I diabetes mellitus, fell asleep on a chair at home in an unusual position and was unable to walk on awakening. The patient developed progressive neurological deficits including bilateral foot drop along with bowel and bladder dysfunction. In addition, he experienced paresthesia and severe lower back pain unresponsive to steroids. Pre-operative magnetic resonance imaging (MRI) demonstrated a herniated disk epidurally with disc extrusion and mass effect and compression at the L3-L4 level, wrapping around the posterior aspect of the dura. A diagnosis of cauda equina syndrome was made and surgical decompression was performed. Using microsurgical technique and fluoroscopic guidance, a bilateral laminectomy of L3 was achieved with bilateral partial laminectomy of L4, with bilateral foraminotomy of L4. After removal of the lamina, a mass was immediately visualized in the posterior epidural space. Further dissection of the substance and following it posteriorly, identified the mass as a portion of the extruded disc. Post-operatively, the patient experienced rapid recovery. In conclusion, this case demonstrates that a disc extrusion can occur within the epidural space and can cause cauda equina syndrome. As this presentation is unusual, surgeons must be aware that they may encounter disc mass in unexpected locations, in a clinically delayed setting, long after the initial onset of symptoms.
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