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Table 1 Patients' characteristics of 40 patients with ONSM treated with FSRT

From: Prior surgical intervention and tumor size impact clinical outcome after precision radiotherapy for the treatment of optic nerve sheath meningiomas (ONSM)

Characteristic

No. (%)

Affected side

 

right

16 (40)

left

23 (58)

bilateral

1 (2)

Treatment prior to FSRT

 

none

18 (45)

surgery

21 (53)

chemotherapy

1 (2)

FSRT

 

primary radiotherapy

19 (48)

directly post-surgery

9 (22)

for progression after surgery

12 (30)

Symptoms

 

Visual field deficits

20 (50)

amaurosis

6 (15)

diplopia

8 (20)

pain

5 (13)

exopthalmia

10 (25)