J Korean Neurosurg Soc.  2010 Mar;47(3):217-220. 10.3340/jkns.2010.47.3.217.

Dorsal Extradural Lumbar Disc Herniation Causing Cauda Equina Syndrome : A Case Report and Review of Literature

• Kim JS
• Lee SH
• Arbatti NJ

• KMID: 2190254
• DOI: http://doi.org/10.3340/jkns.2010.47.3.217

Abstract

A 73-year-old male presented with a rare dorsally sequestrated lumbar disc herniation manifesting as severe radiating pain in both leg, progressively worsening weakness in both lower extremities, and urinary incontinence, suggesting cauda equina syndrome. Magnetic resonance imaging suggested the sequestrated disc fragment located in the extradural space at the L4-L5 level had surrounded and compressed the dural sac from the lateral to dorsal sides. A bilateral decompressive laminectomy was performed under an operating microscope. A large extruded disc was found to have migrated from the ventral aspect, around the thecal sac, and into the dorsal aspect, which compressed the sac to the right. After removal of the disc fragment, his sciatica was relieved and the patient felt strength of lower extremity improved.

Keyword

Lumbar disc herniation; Dorsal; Intradural; Migrated

MeSH Terms

Aged
Cauda Equina
Humans
Laminectomy
Leg
Lower Extremity
Magnetic Resonance Imaging
Male
Polyradiculopathy
Sciatica
Urinary Incontinence