Table 1 Baseline patient and tumor characteristics, n = 53
Characteristic | Valuea |
|---|---|
Age (years) | 60 (23–80) |
Sex | |
Male | 27 (51) |
Female | 26 (49) |
Location | |
Intra-canalicular | 10 (19) |
Extra-canalicular | 43 (81) |
Cystic component | 8 (15) |
Target volume (cm3) | 6.18 (0.8–38) |
Pre-SRS tumor growth | 36 (68) |
Koos grade | |
I | 7 (13) |
II | 26 (49) |
III | 11 (21) |
IV | 10 (17) |
Pre-SRS tinnitus | 37 (70) |
Patient-reported dizziness | 37 (70) |
Clinical examination | |
Spontaneous nystagmus | 6 (11) |
Romberg test | |
Normal | 31 (58) |
Abnormal (positive) | 7 (13.5) |
Unterberger test | |
Normal | 24 (45) |
Abnormal (positive) | 14 (26.5) |
No data available | 15 (28.5) |
Vestibular tests | |
Video-oculography | |
No spontaneous nystagmus | 27 (51) |
Spontaneous nystagmus | 4 (7.5) |
Pathologic smooth pursuit | 7 (13) |
No data available | 15 (28.5) |
Caloric ips. testing (degree of asymmetry) | |
Normal (0–25%) | 3 (5) |
Mild hypofunction (26–50%) | 29 (55) |
Moderate hypofunction (51–75%) | 2 (4) |
Severe hypfunction (76–100%) | 4 (7.5) |
Percentage caloric weakness (%) | 33.5 (3–100) |
No data available | 15 (28.5) |
cVEMP | |
Normal | 8 (15) |
Absent reflex | 16 (30) |
No data available | 29 (55) |