Longitudinal Changes of Quality of Life and Hearing Following Radiosurgery for Vestibular Schwannoma.

BACKGROUND

Most existing publications on quality of life (QoL) following stereotactic radiosurgery (SRS) for vestibular schwannomas (VS) gather information retrospectively by conducting surveys several years after treatment. The purpose of this study is therefore to provide longitudinal QoL data and assess how changes in hearing impact QoL.

METHODS

Patients completed the 12-item short-form (SF-12) health survey prior to treatment and at every follow-up visit. One hundred and seventy-five patients who had complete forms prior to treatment as well as at an early and at a late follow-up were included in the analysis. For 51 of these patients, longitudinal audiometry data were available.

RESULTS

Median follow-up was 7.2 years. Patients experienced a significant reduction in the physical composite score (PCS, = 0.011) compared to before treatment. The mental composite score (MCS) increased significantly ( = 0.032). A decrease in PCS was not significantly correlated with an increased hearing threshold on the affected but rather on the unaffected ear (r(49) = -0.32, = 0.023).

CONCLUSIONS

It is unclear whether the decline in the PCS is due to treatment-related toxicity or the normal decline of PCS with age. Ensuring proper hearing on the untreated ear might be crucial to ensure good QoL for patients treated with SRS for VS, though this association should be confirmed in additional studies.