| Clinical manifestations | Number of cases | Percentage (%) |
| Headache | 8 | 100 |
| Raised intracranial pressure | 7 | 87.50 |
| Visual disturbances* | 6 | 75.00 |
| Diplopia | 5 | 62.50 |
| Papilledema | 5 | 62.50 |
| Blurred vision | 3 | 37.50 |
| Vomiting | 4 | 50.00 |
| Cerebellar syndrome§ | 4 | 50.00 |
| Dizziness | 3 | 37.50 |
| Consciousness disturbance | 2 | 25.00 |
| Concentration difficulty | 2 | 25.00 |
| Memory impairment | 1 | 12.50 |
| Upward gaze paralysis | 1 | 12.50 |