Long-term LC after RT for ANs is 90%-97%. (LunsfordLD et al., JNeurosurg 2005; CombsSE et al., IJROBP 2006; LitreF et al., Radiother Oncol 2013; HasegawaT et al., J Neurosurg 2013; ManiakasA et al., Otol Neurotol 2012)