Table 1.
Details of findings in tumour anatomy and magnetic resonance imaging (MRI)
| Patient | WHO grade | Tumour localisation | Location of interference with CST | Motor fMRI | Susceptibility artefact on T2* EPI images |
|---|---|---|---|---|---|
| 1 | II | L INS, GFM, GFI, GTS, PLIC | WM | M1 intact | No |
| 2 | II | R GFS, GPC | GM | Peritumoural activation | 2 microbleeds in GFS |
| 3 | II | L INS, GTS, PLIC | WM | M1 intact, activation of ipsilateral SMA | No |
| 4 | II | L INS, GPC, GSM, GpoC | WM | M1 intact, activation of ipsilateral SMA | No |
| 5 | II | L GPC, GFM, SOC | WM | M1 deviated, activation of ipsilateral SMA | 1 microbleed in GFM |
| 6 | III | R GFI, GR, GTS, GPH, INS, PLIC, PED | WM | M1 intact, activation of ipsilateral SMA | Hemorrhage in tumour |
| 7 | III | L GPC, GFM, INS, GpoC, SOC | WM | Activation persists within tumour | Hemorrhage in tumour |
| 8 | III | L GFS, GFM, SOC | WM | M1 intact, activation of ipsilateral SMA | Hemorrhage in tumour |
| 9 | III | L GFS, GFM, INS, PLIC | WM | M1 intact | 2 microbleeds in tumour |
| 10 | III | R GpoC, INS, GTS, PLIC, THAL, PED | WM | Peritumoural activation | 1 microbleed in tumour |
| 11 | III | R GpoC, SOC | WM | M1 deviated, activation of ipsilateral SMA | Hemorrhage in tumour |
| 12 | III | R GpoC, CING, SOC | WM | M1 deviated, activation of ipsilateral SMA | 1 microbleed in tumour |
| 13 | III | L GPC, GFS, GFM, SOC | WM | Peritumoural, contralateral M1 and bilateral SMA activation | Hemorrhage in tumour |
| 14 | II | L GPC | GM | M1 deviated, activation of bilateral SMA | 1 microbleed in tumour |
| 15 | III | L GPC, GFS, Cing | GM | Peritumoural activation, activation of contralateral SMA | No |
| 16 | II | L GPC, GFS | GM | Peritumoural activation, activation of ipsilateral SMA | 1 microbleed in tumour |
| 17 | III | R GpoC, GPC, SOC | WM | Peritumoural, contralateral M1 and ipsilateral SMA activation | No |
CING cingulate gyrus, CST corticospinal tract, fMRI functional magnetic resonance imaging, GFI inferior frontal gyrus, GFM middle frontal gyrus, GFS superior frontal gyrus, GM gray matter, GPC precentral gyrus, GPH parahippocampal gyrus, GpoC postcentral gyrus, GR straight gyrus (rectus), GSM supramarginal gyrus, GTS superior temporal gyrus, INS insula, M1 primary motor area, PED cerebral peduncle, PLIC posterior limb of internal capsule, SMA supplementary motor area, SOC semioval centre, THAL thalamus, WHO world health organisation, WM white matter