PMC8364957_01
Preoperative computed tomography showing calcified and cystic lesions in the left temporal lobe (A). MR images showing high intensity in the left temporal lobe on T2-weighted image (B) and heterogeneous enhanced lesion on gadolinium-enhanced T1- weighted image (C).
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F1
T2 signal and heterogeneous enhancement and a cystic component located medially (Figures 1B,C). The tumor was located in the inferior temporal and middle temporal regions and the fusiform gyrus and 74.6 x 50.0 x 51.5 mm (AP x LR x HT) in size.
The exposed brain surface (A) and a 20-channel ECoG grid placement (B) before resection. Red bubble meaning significant listening task-evoked high gamma activities in each task during passive language mapping (C). STG, superior temporal gyrus; MTG, middle temporal gyrus; ITG, inferior temporal gyrus.
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F2
The exposed brain surface and grid were captured by a digital camera before resection (Figures 2A,B). Significant listening task-evoked high gamma activities were detected (Figure 2C).
5 channels in the superior temporal gyrus and one channel in the middle temporal gyrus meaning the auditory (yellow) and Wernicke (blue) areas (A). The gross tumor removal except for the lower-grade lesion in the middle temporal gyrus (blue circle) (B).
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F3
We analyzed 5 channels in the superior temporal gyrus and one channel in the middle temporal gyrus that were most meaningful for the auditory and Wernicke areas (Figure 3A). The tumor was totally removed except for the region corresponding to the listening task-evoked high gamma activities in the middle temporal gyrus and was suspected to be a lower-grade glioma (Figure 3B).
Postoperative MRI showing gross total removal of the tumor.
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F4
Postoperative MRI showed gross total resection of the enhancing component (Figure 4).