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. 2022 May 12;13:874826. doi: 10.3389/fneur.2022.874826

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Copyright © 2022 Motomura, Ohka, Aoki and Saito.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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A 48-year-old right-handed male with IDH-wildtype glioblastoma (GBM). Preoperative axial T2-weighted (A) and axial T1-weighted MRI with gadolinium enhancement (B), showing a high-intensity abnormal area in the left inferior parietal lobule including an enhancing region at the superficial area. Preoperative three-dimensional tractography (C) showing a yellow-colored fiber tract bundle showing the corticospinal tract. The green area shows the superior longitudinal fasciculus, the blue fiber tract bundle shows the inferior fronto-occipital fasciculus, and the high-intensity area on T2-weighted MRI is highlighted in orange. The violet-colored lesion in the orange-colored area showed an enhancing mass. (D) Intraoperative photograph obtained before tumor resection, with letter tags indicating tumor boundaries (A–D). Stimulation over the postcentral gyrus induced convulsions around the mouth (number tags: 1, 2); stimulation over the left superior parietal lobule induced cessation of right upper limb movement (number tags: 4–7); arrowhead: intraparietal sulcus. (E) Intraoperative photograph obtained after supratotal resection. Stimulation over the IFOF induced semantic paraphasia (number tag: 31). Postoperative axial T2-weighted MRI (F) revealed no tumor following supratotal resection.