Table 2 Clinical and otological features of patients from the five study groups
Control group (group 1) | Non-obstructive vestibular schwannoma (group 2) | CSF-border vestibular schwannoma (group 3) | Obstructive vestibular schwannoma (group 4) | IAC meningioma (group 5) | |
|---|---|---|---|---|---|
Patients (n) | 60 | 33 | 31 | 126 | 13 |
Mean tumour volume (cm3) [range] | NA | 0.03 [0.05–0.247] | 0.31 [0.03–1.023] | 1.49 [0.03–20] | 3.74 [0.16–20.14] |
T1: 0.219 | |||||
T2: 0.54 | |||||
T3: 2.83 | |||||
T4: 11.43 | |||||
M : F | 31 : 33 | 14 : 19 | 13 : 18 | 68 : 58 | 2 : 11 |
Mean age (years) [range] | 32.3 [22–57] | 63 [41–80] | 61 [26–86] | 58 [24–92] | 66 [39–85] |
Hearing loss | 0 | 89% (n = 24) | 96% (n = 25) | 89% (n = 111) | 67% (n = 8) |
Perception | 0 | 88% (n = 21) | 100% (n = 25) | 89% (n = 99) | 100% (n = 8) |
Mixed | 0 | 12% (n = 3) | 0 | 11% (12) | 0% |
Progressive | 0 | 88% (n = 21) | 92% (n = 23) | 78% (n = 87) | 100% (n = 8) |
Sudden | 0 | 12% (n = 3) | 8% (n = 2) | 22% (n = 24) | 0% |
Mean hearing loss (dB) | 0 | 36 | 45 | 48 | 26 |
Tinnitus | 0 | 40% (n = 11) | 69% (n = 18) | 50% (n = 61) | 50% (n = 6) |
Vertigo | 0 | 44% (n = 12) | 31% (n = 8) | 34% (n = 42) | 60% (n = 8) |
Dizziness | 0 | 19% (n = 5) | 25% (n = 6) | 37% (n = 45) | 17% (n = 2) |