Intradural spinal arachnoid cyst contributing to sudden paraparesis.

Spinal arachnoid cysts are cystic lesions filled with cerebrospinal fluid that contributes to neurological deficits depending on their size/location within the spinal canal. Here, we report a patient with a spinal subarachnoid cyst who suddenly developed paraparesis.

A 37-year-old female with a thoracic spinal arachnoid cyst at the T7 level suddenly developed lower abdominal pain followed by immediate paraparesis. Two weeks following the onset of symptoms, she underwent a T6-T8 laminectomy; this included with full cyst excision. By the 4^th postoperative week, her signs/symptoms fully resolved.

A 37-year-old female with a T7 thoracic spinal subarachnoid cyst who presented with acute paraparesis regained normal function 2 weeks following a T6-T8 laminectomy.