Table 2.
Neuroradiological features based on magnetic resonance imaging.
| Neuroradiological features | Number of tumours (17) |
|---|---|
| Clear demarcation of tumour edge | 17 |
| Location | |
| Frontal lobe | 5 (3 involving corpus callosum) |
| Temporal lobe | 4 (1 involving the insula) |
| Parietal lobe | 3 |
| Fronto-temporal lobe | 2 |
| Fronto-parietal lobes | 1 |
| Parieto-occipital lobes | 1 |
| Fronto-temporo-parieto-insular lobes | 1 |
| Tumour abutting the dura | 13 |
| Yes, without dural enhancement | 5 |
| Yes, with dural enhancement | 8 |
| No | 4 |
| Peritumoral oedema | 17 |
| Mild | 3 |
| Moderate | 11 |
| Marked | 3 |
| Signal Intensity in T1-weighted images | |
| Hypointense | 3 |
| Mostly hypointense with hyperintense foci | 8 |
| Mostly hypointense with isointense and hyperintense foci | 3 |
| Mostly hypointense with isointense foci | 2 |
| Mostly isointense with an hypointense area | 1 |
| Signal Intensity in T2-weighted images | |
| Mostly hyperintense with hypointense foci | 5 |
| Mostly isointense with an hyperintense area | 2 |
| Mostly hyperintense with isointense and hypointense foci | 7 |
| Mostly hyperintense with isointense foci | 3 |
| Enhancement pattern | |
| Rim enhancement with nodularity/irregular thick wall | 12 |
| Mostly solid enhancement | 3 |
| Rim enhancement with nodularity/irregular thick wall and a solid component | 2 (1 with ependymal enhancement) |
| Diffusion-weighted image | 11 |
| Restricted diffusion in solid/thick component | 8 |
| Without restricted diffusion | 2 |
| Unreadable (haematoma) | 1 |
| Perfusion-weighted image | |
| (concerning solid/thick components of tumour) | 8 |
| rCBV (qualitative analysis) hyperperfusion | 8 |
| Perfusion mean curve with PSR > 60% | 8 |
rCBV: relative cerebral volume; PSR: percentage of signal intensity recovery.