Table 3.

Management of Secondary Treatment After Recurrence and Visual Function Before Secondary Treatment

Management of Secondary Treatment After Recurrence
Parameters	Number of Patientsn = 18
Treatment
Resection	2 (11%)
FSRT	16 (89%)
FSRT
Dose per fraction (Gy)	1.8
Median total dose (Gy)	54.0
Range total dose (Gy)	52.2–54.0
Median GTV (range) in ccm	19.8 (10.9–134.3)
Median PTV (range) in ccm	150.1 (18.8–454.4)
Visual Function Before Secondary Treatment
	Baseline	Stable/ Improved	Worsened
Double vision	2 (11%)	1 (6%)	1 (6%)
Visual field restriction	8 (44%)	6 (33%)	2 (11%)
Visual impairment right eye	6 (33%)	0 (0%)	6 (33%)
Visual impairment left eye	5 (28%)	2 (11%)	3 (17%)

FSRT, fractionated stereotactic radiotherapy; GTV, gross tumor volume; PTV, planning target volume.