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OBJECTIVE Maximal safe resection is a standard of care (SOC) for treatment of malignant glioma in light of quality of life (QOL) maintenance and better outcomes. This strategy is especially important when vital perforating arteries such as lateral striate arteries (LSA) and anterior choroidal arteries,are involved in tumor and its periphery,as their damage causes serious deterioration in the activities of daily life. Here we report a utility of preoperative cerebral angiography in glioma surgery. METHODS Six cases of perforator-involving malignant gliomas, consisting of five glioblastomas and one anaplastic ganglioma, operated from December 2018 to July 2019 were evaluated with preoperative imaging using sophisticated cerebral angiographic techniques and fusion imaging with MRI. RESULTS In all six cases, perforating arteries passed through or around the tumors. The cerebral angiography revealed the origin of LSA in all patients; one at M1,two at M1-M1 junction, and three at the superior trunk of M2. Anterior choroidal arteries and Heubner’s recurrent arteries were also identified preoperatively. By knowing the precise locations of these perforators,intraoperative resection of vascular-rich malignant gliomas could be performed with precaution of avoiding their unnecessary injury. No symptomatic complications occurred after angiography. Postoperative MRI disclosed a potential embolic infarction in the perforator territory in one patient,which resolved in a few days. CONCLUSIONS Visualization of perforators by angiography was helpful in detailed evaluation of surgical strategy and facilitated safe resection also leading to shortening of operating time. Compared to another modalities,angiography provided the best special resolution for visualization of vital perforating arteries involved in malignant gliomas.

COT-13 THE USEFULNESS OF THE CEREBRAL ANGIOGRAPHY FOR RESECTION OF THE MALIGNANT GLIOMA