Table 1.
Patient demographics and preoperative clinical status
| Age in years (mean ± SD) | 64 ± 7 |
| Gender, n (%) | |
| Male | 11 (73) |
| Female | 4 (27) |
| Preoperative symptoms*, n (%) | |
| Headache | 4 (27) |
| Seizures | 5 (33) |
| Cognitive symptoms | 5 (33) |
| Unsteadiness/ataxia | 5 (33) |
| Visual disturbances | 1 (7) |
| Aphasia/dysphasia | 7 (47) |
| Cranial nerve deficits | 2 (13) |
| Motor deficits | 2 (13) |
| NIH Stroke Scale ≥ 2, n (%) | 2 (13) |
| Mini Mental Status ≤ 28, n (%) | 7 (47) |
| Karnofsky Performance Status ≥ 70, n (%) | 14 (93) |
| American Society of Anaesthesiology score (ASA score), n (%) | |
| 1–2 | 12 (80) |
| ≥ 3 | 3 (20) |
| Tumour location*, n (%) | |
| Multifocal | 2 (13) |
| Frontal | 9 (60) |
| Temporal | 5 (33) |
| Parietal | 6 (40) |
| Occipital | 0 (0) |
| Insula/basal ganglia | 2 (13) |
| MRI findings | |
| Contrast enhancement/ring on MRI, n (%) | 15 (100) |
| Tumour crossing midline, n (%) | 2 (13) |
| Growth into ventricular system, n (%) | 5 (33) |
| Eloquent location (Sawaya grade 3), n (%) | 9 (60) |
| Left-sided tumour, n (%) | 11 (73) |
| Preoperative tumour volume, cm3, mean ± SD | 35 ± 25 |
| Max depth from craniotomy, mm, median ± IQR** | 55 ± 17 |
| Largest diameter oedema, mm, median ± IQR** | 70 ± 26 |
| Midline shift, mm, median ± IQR** | 3 ± 4 |
| Primary operation, n (%) | 14 (93) |
*Multiple symptoms/locations can be present for a patient
**Interquartile range