Table 1 Age and gender distribution, localization of the lesions and histological diagnosis of 255 cases.

   Men: 118/women: 137

n = 255

   Age: 16–87 years

Mean age: 57.3

Localization:

   Dominant hemisphere: 138

Nondominant hemisphere: 117

   Frontal contact with area 4

89

   Direct involvement of area 4

111

   Dorsal contact with area 4

55

Histological examination results:

   Metastases

107

   Gliomas WHO IV

69

   Gliomas WHO II–III

44

   Meningiomas

12

   Arteriovenous malformations

7

   Oligodendrogliomas

5

   Cavernomas

5

   Gliosarcomas

2

   PNET

2

   Chondroma

1

   Epidermoid cyst

1