![]() ![]() According to the World Health Organization (WHO) classification, most meningiomas are histologically benign (WHO grade I) tumors. Meningioma arises from the meninges covering the brain and spinal cord, and ranks the second common primary brain tumors after gliomas, accounting for about 30% of all brain tumors ( 1- 4). Keywords: Primary motor cortex (PMC) meningioma drainage vein electrophysiological monitor They could help decrease motor cortex damage and protect the drainage venous during surgery, which is much safer and benefit patient for better prognosis. When discharge, those affected patients were recommended for further movement rehabilitation therapy.Ĭonclusions: Preoperative multi-model image planning and intraoperative electrophysiological monitor are very useful techniques for resection of PMC meningioma. Four patients suffered from moderate muscle strength decrease postoperatively, 10 patients experienced slight muscle strength decrease, while other 16 patients shared normal muscle strength as preoperative status. After tumor resection, MEP monitor was used to confirm the preservation of motor function. ![]() Twenty-five cases in our study achieved radical resection of Simpson I, and 5 cases were Simpson II resection. With the application of SSEP monitor, the CS was firstly determined before tumor resection. Results: All the patients received preoperative image planning, and the relationships of tumor, drainage venous and motor cortex were clearly presented. After tumor resection, motor-evoked potentials (MEP) was applied to evaluate the motor function reservation. Then the tumors were carefully removed by avoiding damage the cortex and drainage venous. During the operation, somatosensory-evoked potentials (SSEP) was firstly used to locate the central sulcus (CS) and define the PMC area. All the patients were performed head magnetic resonance imaging (MRI), magnetic resonance venography (MRV) and functional MRI scan before surgery, then all the imaging data were transferred to dextroscope workstation for virtual reality (VR) planning, to display the relationship of tumor, drainage venous and motor cortex. Methods: Thirty patients of PMC meningioma were selected for the study during January 2014 to December 2015. By these techniques, patients in our study achieved gross tumor resection (GTR) with appropriate motor cortex and drainage venous protection, and the patients recovered well with less neurologic deficits. Here, we presented our experience in resection of PMC meningioma, with the assistance of preoperative multi-model image planning and intraoperative electrophysiological monitor. Interviews with Outstanding Guest Editorsīackground: Resection of meningioma located at primary motor cortex (PMC) is a great challenge to neurosurgeons due to the possibility of motor cortex injury and drainage venous damage during surgery. ![]()
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