Surgical approach

Lateral ventricle

3. Ventricle

4. Ventricle

Total

Interhemispheric trans-callosal

6

13

-

19

Transcortical

11

-

2

13

Pteryonal

-

2

-

2

Suboccipital Infratentorial

-

-

3

3

Supravermian

-

-

2

2

Stereotaxis

1

-

-

1

Total

18

15

7

40