A discrepAncy between surgeon-assessed and patient-perceived outcomes of vestibular schwannoma (VS) surgery has been reported. 16,19,22 Hence, there is a need for greater emphasis on quality of life (QOL) outcomes (which are patient reported) following surgery for VS. Most of the QOL studies in patients undergoing surgery for VS are retrospective and include patients with small tumors. [1][2][3][4][5][6][7]14,18,21,23,27,28,31 Few studies have reported QOL following surgery for large VS, but even those have mostly been retrospective in nature.
22,25One of the major deficiencies in QOL studies on VS patients is the lack of a planned prospective comparison between QOL values before and after treatment in large cohorts of patients. 10,11 The few published prospective studies involved patients with small VSs (< 3 cm). 20,24,26 To our knowledge there is only one prospective report of QOL in patients with larger tumors (> 3 cm), and that study involved 37 patients.
8None of the reports of QOL in patients with VS have included the proportion of patients showing a minimum clinically important difference (MCID) in the different QOL domains. Surgeons need to know whether an observed change in score represents a clinically important improvement or deterioration rather than merely an inconsequential fluctuation. Differences in scores smaller than the MCID are considered unimportant, regardless of whether statistical significance is reached. To date, such information has not been provided in any published report on QOL in VS patients.We aimed to study the factors affecting QOL in pa- OBJect Prospective studies of quality of life (QOL) are infrequently performed in patients undergoing surgery for vestibular schwannoma (VS). The authors designed this to study to investigate health-related QOL (HR-QOL) in patients with large and giant VSs before and after surgery. methOdS Between January 2009 and December 2012, HR-QOL was measured prospectively before and after surgery, using the 36-Item Short Form Health Survey (SF-36), in 100 patients who underwent surgery for unilateral large or giant VS (tumor size ≥ 3 cm). The Glasgow Benefit Inventory (GBI) was also used to evaluate the effect of surgery. reSultS A total of 100 patients were included in the study (65 men and 35 women). Their mean age (± SD) was 44.2 ± 11.5 years. The preoperative QOL was decreased in all SF-36 domains. A 1-year follow-up evaluation was conducted for all patients (mean 13.5 ± 5.3 months after surgery). The results showed an improvement in HR-QOL compared with preoperative status in all cases, with 63%-85% of patients showing a minimum clinically important difference (MCID) in various domains. A second follow-up evaluation was performed in 51 cases (mean time after surgery, 29.0 ± 8.3 months) and showed sustained improvement in SF-36 scores. In some domains there was further improvement beyond the first follow-up. On the GBI, 87% of patients reported improvement, 1% felt no change, and 12% of patients reported deterioration. cONcluSiONS Patients harboring l...