Table 2 Tumor entity, WHO grade and intraventricular location
Tumor % (N) or mean/median (SD/IR) | N | WHO | Ventricle location | Location within | Approach according to location | ||
|---|---|---|---|---|---|---|---|
Lateral ventricles | 3rd | 4th | |||||
Ependymoma | 13 | II (12) III (1) | Lateral ventricle 7.7% (1) | Left temporal horn (1) | Â | Â | Frontotemporal (1) |
4th ventricle 92.3% (12) | Â | Â | Below str. Med 100% (12) | TeloVelar (12) | |||
Subependymoma | 21 | I II (1) | Lateral ventricle 52.4% (11) | Left frontal horn 36.4% (4) Right frontal horn 63.6% (7) | Â | Â | Frontal-Keyhole (10) Parietal craniotomy (1) |
4th ventricle 47.6% (10) | Â | Â | Below str. Med. 90.0% (9) Above str. Med. 10.0% (1) | TeloVelar (10) | |||
Central Neurocytoma | 10 | II | Lateral ventricle 90.0% (9) | Left frontal horn 55.6% (5) Right frontal horn 44.4% (4) | Â | Â | Frontal-Keyhole (9) |
3rd ventricle 10.0% (1) | Â | Floor (1) | Â | Infratententorial-supracerebellar (1) | |||
GEC | 1 | – | 3rd ventricle 100% (1) |  | Roof (1) |  | Frontal-Keyhole (1) |
Total | 45 | Â | Lateral ventricle 46.7% (21) 3rd ventricle 4.4% (2) 4th ventricle 48.9% (22) | Â | Â | Â | Frontal-Keyhole 44.4% (20) Others 6.7% (3) TeloVelar 48.9% (22) |