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Table 1 Summary of patient characteristics

From: Fractionated stereotactic radiosurgery for patients with skull base metastases from systemic cancer involving the anterior visual pathway

Parameter No (%)
Number of patients 34
Sex (F/M) 23/11
Age (years)  
Median 59
< 65 23
≥ 65 years 11
Histology  
NSCLC 12
Breast carcinoma 16
Colon carcinoma 2
Others* 4
KPS  
Median 70
>70 18
≤70 16
Extracranial diseae  
Present 21
Absent 13
Number of metastases  
Single 23
Multiple [2, 3] 11
Location  
CS only 7
CS and retrorbital space 4
CS and clivus 6
CS and/or sellar/suprasellar space 14
CS and petrus bone 3
GTV (cm 3 )  
Median 8.5
Range 1.9 - 25.8
PTV (cm 3 )  
Median 12.8
Range 3.4 - 35.8
Conformity index  
Median 1.61
Range 1.28-2.12
  1. KPS, Karnofsky Performance Status; GTV, Gross Target Volume; PTV, Planning Target Volume.
  2. *Others histologies included two melanomas, one renal cell, and one prostate carcinoma.