Table 1.

Characteristics of the 71 patients in this series.

Sex (n, %)
Male	14 (19.7%)
Female	57 (80.3%)
Age in years (mean ± SD, range)	52.3 ± 11.2 (31–85)
Primary or postoperative treatment (n, %)
Primary	43 (60.6%)
Postoperative	28 (39.4%)
Initial tumor volume (n, %)
<8 cc	29 (40.8%)
8–20 cc	28 (39.4%)
>20 cc	14 (19.7%)
Tumor location (n, %)
Skull base	59 (83.1%)
Parasagittal sinus	9 (12.7%)
Lateral ventricle	1(1.4%)
Pineal region	1(1.4%)
Tentorium	1(1.4%)
Interval in months between radiosurgery stages (mean ± SD, range)	6.1 ± 1.9 (3–12)
Peripheral dose (Gy) for first treatment (mean ± SD, range)	9.0 ± 0.9 (8–13.5)
Peripheral dose (Gy) for second treatment (mean ± SD, range)	8.6 ± 0.7 (7–10)