Spinal Extradural Meningeal Cyst: Correct Radiological and Histopathological Diagnosis

Kimiaki Sato, MD, Kensei Nagata, MD, Yasuo Sugita, MD


Neurosurg Focus. 2002;13(4) 

In This Article

Clinical Material and Methods

Table 1 provides a summary of the clinical data obtained in the five patients. Their mean age was 47 years (range 14-75 years). There were three female and two male patients. Four of the cysts were located at the thoracolumbar level and one at the sacral level. The patient in Case 3 had undergone a lumbar puncture 3 years before the present symptoms occurred; the other four patients had suffered no prior illness or trauma. Presenting symptoms included low-back pain, buttock pain, leg pain, leg weakness and/or numbness, gait disturbance, and urinary incontinence. Intermittent exacerbation of symptoms evidently occurred with changes in posture in one patient (Case 2). All patients underwent plain radiography, MR imaging, water-soluble myelography, and/or CT myelography. Laminectomy was performed for excision of the cyst in all cases.