Abstract
Hydatid disease is a serious public health problem in developing countries. Cerebrospinal localizations account for 1% of all cases of hydatid disease. The spino-radicular form is exceptional. We report a case of a 25-year-old women with cauda equina. Thoraco-lumbar MRI has showed an intradural process extending from L3 to L5, a low-intensity signal on T1 weighted images and a high-intensity signal on T2 weighted images, which were not enhanced after gadolinium injection. There was no vertebral involvement. After L3 L4 and L5 laminotomy and opening of the dura-matter, multiple vesicles were found scattered among the roots, with no adhesion to meninges or nervous structures. Total extirpation was easy. The outcome was marked by recovery of the motor deficit and sphincter disorders. This localization is serious but its prognosis is excellent if the diagnosis is made early enough to prevent cyst rupture and to allow total resection.
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