Table 1.
Patients’ characteristics
| Patient | Age at first surgery, years | Hearing on first side at surgery (ABCD class) | Duration of radiological follow-up, years |
MTD of the resected schwannoma at surgery, cm | MTD of the contralateral schwannoma at surgery, cm | VDE evolution, mm/year |
Contralateral ear |
Surgery of contralateral schwannoma | Time to second surgery (years) | Mean Ki-67 (%) (±SD) |
||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Since diagnosis | Since first surgery | Before first surgery | After first surgery | Hearing status at first surgery (ABCD class) | Hearing status at the end of follow-up (ABCD class) | First operated schwannoma | Controlateral schwannoma | |||||||
| 1 | 32 | D | 6.4 | 4.3 | 2.9 | 2.8 | 1.3 | 3.3 | A | A | No | — | — | — |
| 2 | 38 | B | 12.0 | 5.9 | 3.3 | 1.4 | 0.6 | −0.1 | C | D | No | — | — | — |
| 3 | 24 | D | 9.4 | 6.9 | 3.4 | 1.8 | 1.7 | 2.9 | D | D | No | — | — | — |
| 4 | 20 | A | 6.7 | 3.2 | 1.8 | 1.0 | 1.6 | 2.9 | A | A | No | — | — | — |
| 5 | 18 | D | 9.4 | 2.4 | 3.6 | 1.5 | 2.0 | 7.8 | A | D | Yes | 2.3 | 1.7 (±0.4) | 2.0 (±0.6) |
| 6 | 20 | D | 3.2 | 0.8 | 2.9 | 1.6 | 3.3 | 2.1 | D | D | No | — | — | — |
| 7 | 25 | D | 15.8 | 14.6 | 3.1 | 2.9 | 2.6 | 0.8 | A | D | No | — | — | — |
| 8 | 28 | D | 6.9 | 0.9 | 2.8 | 2.0 | 3.3 | 7.0 | B | C | Yes | 1.6 | 1.4 (±0.9) | 2.4 (±1.5) |
| 9 | 18 | D | 2.3 | 2.0 | 3.6 | 1.9 | 4.0 | 7.9 | D | D | Yes | 2.0 | 1.5 (±0.5) | 2.8 (±1.0) |
| 10 | 13 | A | 2.9 | 1.1 | 2.9 | 1.8 | 5.7 | 10.5 | A | B | Yes | 1.5 | 4.0 (±1.3) | 14.0 (±0.3) |
| 11 | 13 | D | 9.2 | 7.7 | 2.7 | 1.0 | 1.3 | 3.2 | A | D | Yes | 7.7 | 2.1 (±1.3) | 1.7 (±1.0) |
Abbreviations: MTD, mean tumor diameter; VDE, velocity of diametric expansion.