[Delayed pseudomeningocele as a result of penetrating injury: case report].

Pseudomeningocele is cerebrospinal fluid collection in an extradural area after meningeal tear. The size of the defect in the dura-arachnoid, the pressure of spinal fluid, and the resistance of the soft tissue presumably determine the size of the pseudocyst. The main symptoms are often: headache, neck pain and myelopathic and radicular signs. Pseudomeningocele is diagnosed by myelography, sonography, computed tomography, and magnetic resonance imaging. We present a case of intraoperative identification nerve root entrapment by pseudomeningocele cyst and postoperative recovery of a patient's neurologic deficit.