Number

Age (years)

<40

2

40 - 60

4

≥60

4

Gender

Male

4

Female

6

Pathology

Vestibular schwannoma

7

Meningioma

2

Hyalinizing hemangioma

1

Dysphagia

Level II

2

Level III

4

Level IV

3

Level V

1

Dyspnea

4