Intraoperative iatrogenic seizure induced by transcranial motor-evoked potential during spinal surgery: A case report and review of the literature.

Background: Intraoperative neuromonitoring is an essential tool for detecting early intraoperative neurological changes during spinal surgery. Only rarely do seizures occur during transcranial motor-evoked potentials (TcMEP).

Case Description: A 44-year-old male presented with a magnetic resonance (MR)--documented L5-S1 T2-hyperintense intradural mass that heterogeneously enhanced with Gadolinium and extended through the right S1 neural foramen.

Huge Atypical Meningioma in a 21-Month-Old Girl: A Case Report.

Meningiomas are the most common intracranial tumors, but it's uncommon in the pediatric and adolescent populations. Pediatric meningiomas differ from adult meningiomas by a higher rate of malignant change, atypical location, male predominance and a higher recurrence rate. The most common presenting symptoms in supratentorial pediatric meningiomas are the signs and symptoms of high intracranial pressure (headache, vomiting, and nausea) and seizures.