Table 2.
Characteristics of preexisting GK series and this series in the treatment of iAN
| Authors, centre & year | n | Design | SRS System | FU (months) | Tumor control (no need for further treatment) | Preservation of hearing | CTCAE rating | Permanent CN VII impairment (%) |
|---|---|---|---|---|---|---|---|---|
| Pittsburgh, Ogunrinde et al. 1995 [22] | 10 | R, SC | GK | mean: 25 (3:64) | 100% | 80% (after one year) | no | 0% |
| Pittsburgh, Niranjan et al. 1999 [23] | 29 | R, SC | GK | median: 33 (9;106) | 100% | 73% | no | 0% |
| Pittsburgh, Niranjan et al. 2008 [10] | 96 | R, SC | GK |
mean: 42 (12;144) median: 28 |
99% | 64.5% | no | 2% |
| Marseille, Regis et al. 2011 [11] | 34 | P, SC | GK | mean: 44 (9;222) | 97% | 64% (after 5 years) | no | n/a |
| Seoul, Kim et al. 2012 [9] | 58 | R, SC | GK | mean: 62 (24;111) | 100% | 55% (after 5 years) | no | n/a |
| Cologne, this series, 2016 | 49 | R, SC | LINAC CK |
mean: 65 (4;239) median: 47 |
100% | 75% (after 5 years) | yes | 2% |
P prospective, R retrospective, SC single center