Table 1.
Clinical characteristics of tumour patients.
| Clinical variable | Number of patients |
|---|---|
| Sex (M/F) | 22/22 |
| Hemisphere harbouring tumour (L/R)* | 42/2 |
| Handedness (R/L/ambidextrous) | 38/4/2 |
| Confirmed seizure (Y/N) | 32/12 |
| Tumour location | |
| Temporal lobe | 14 |
| Frontal lobe | 18 |
| Insula | 0 |
| Temporo-insular | 6 |
| Fronto-insular | 6 |
| Pathology | |
| Low grade | 16 |
| (Oligodendroglioma, WHO grade II) | (7) |
| (Astrocytoma, WHO grade II) | (8) |
| (Diffuse glioma, NOS) | (1) |
| High grade | 22 |
| (Anaplastic oligodendroglioma, WHO III) | (2) |
| (Anaplastic astrocytoma, WHO grade III) | (13) |
| (Glioblastoma, WHO IV) | (7) |
| Focal cortical dysplasia | 1 |
| Dysembryoplastic Neuroepithelial Tumour | 2 |
| Meningioma | 1 |
| Unknown (suspected glioma) | 2 |
The 2 tumours occurring in the right hemisphere of left-handed patient with speech symptoms (marked with an *) were hemisphere-flipped to the left hemisphere for all analyses. WHO = World Health Organisation. NOS = not otherwise specified.