Table 1.

Patient characteristics

Age Median / range (years)	47.9	22.2–82.4
	n	%
Sex
Male	8	31
Female	18	69
Side
Right	16	62
Left	10	38
Time from diagnosis to radiotherapy
< 1 year	22	85
> 1 year	4	15
PET for radiotherapy planning
No	4	15
Yes	22	85
Growth pattern
Sheathlike	18	69
Fusiform	8	31
Involvement of optic canal
No	9	35
Yes	17	65
Use of corticosteroids
No	16	62
Yes	10	38