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case_images: Magnetic Resonance Imaging (MRI) of the spine showing a well-defined intradural extramedullary lesion arising at D9 level with significant cord compression and myelomalacia. The lesion appears to be variable in consistency with outer calcification.
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case_images: Magnetic resonance imaging (MRI) of the spine revealed a D9-D10 calcified meningioma with significant spinal cord compression (Fig. 1).
case_images: D-wave monitoring in patient 1: A: D-wave recorded from proximal to the tumor (i.e., towards the cranial side); B: D-wave recorded distal to the tumor (i.e., towards the caudal side); C, D, E: D-wave recordings during the surgery.
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case_images: Detailed D-wave and MEP monitoring findings are reported in Fig. 2, Fig. 3.
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case_images: A: MRI of the cervical spine and cranio-vertebral junction showing an ill-defined intramedullary lesion with surrounding edema and irregular contrast uptake. B, C, D: Intraoperative images showing the dural opening, myelotomy, tumor, and tumor bed.
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case_images: Under microscope, durotomy was performed, arachnoid was cut, and CSF was let out (Fig. 4).
case_images: D-wave monitoring in patient 2: A: baseline D-wave; B: significant drop in D-wave amplitude in left trapezius (almost 40 %) during dissection of the tumor; C: D-wave recordings during the surgery.
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case_images: A comprehensive description of the D-wave and MEP monitoring findings is outlined in Fig. 5, Fig. 6.