Table 1.
Tumor classifications and surgical details.
| Tumor Type | Tumor occupied spaces | No. of cases | No. of GTR cases | Surgical corridors | Additional bone removal |
|---|---|---|---|---|---|
| Schwannomas | Cistern | 9 | 9 | (1) | |
| JF + Cistern | 9 | 9 | (1)+(2) | ||
| JF | 5 | 5 | (2) | Condyle (hypoglossal) | |
| JF + Retrostyloid | 5 | 5 | (2)+(3) | ||
| Dumbbell-like | 20 | 17 | (1)+ (2)+(3) | ||
| Meningioomas | Cistern | 3 | 2 | (1)+ (2) | |
| JF + Cistern | 2 | 2 | (1)+ (2) | ||
| Dumbbell-like | 4 | 3 | (1)+ (2)+(3) | ||
| Paragangliomas | JF + Retrostyloid | 2 | 2 | (1)+ (2) | Infra-labyrinthine |
| Dumbell-like | 1 | 1 | (1)+ (2)+(3) | ||
| Hemangiopericytomas | JF+Retrostyloid space | 1 | 1 | (2)+(3) | |
| Chordoma | JF+Cistern | 1 | 1 | (1)+ (2) | |
| Endolymphatic sac tumor | JF+labyrinth | 1 | 1 | (2) | Infra-labyrinthine and post-labyrinthine |
| Langerhans’cell histiocytosis | Dumbell-like | 1 | 1 | (1)+ (2)+(3) |