Seventeen patients were male and 8 patients were female in the last 10 years period. Their ages were between 7 and 66. Ten patients had lateral ventricle tumors and 15 patients had third ventricle rumors. Computerized Tomography and Magnetic Resonance Imaging of the brain were used in diagnosing the pathologies of the patients.

We performed transcallosal approch for 22(88%) patients and transcortical approach for 3(12%) patients. We preferred transcortical approach for the patients whose tumor localised in the temporal and occipital horn. Transcallosal approach was performed for 7 lateral ventride tumors localized in the anterior horn and foramen monro.

Two patients showed recurrances (Grade II astrocytoma and giant cell astrocytoma) in lateral ventricle and they were reoperated. Their tumors were totally excised. There were 15 tumors in the third ventricle; 9 colloid cysts, 2 craniopharingiomas, 2 oliodendrogliomas, 1 pilocytic astrocytoma and 1 infiltrative cyst. All patients were totaly exicised except pilocytic astrocytoma by transcallosal route. In the second operation, residual pilocytic astrocytoma could only be removed subtotaly again.

During the postoperative period 2 patients needed temporary ventriculostomy. 1 patient before tumor surgery and 2 patients after tumor surgery needed ventriculoperitoneal shunting because of hydrocephalus. In the early postoperative period 3 patients had frontal lobe hematomas, 1 patient had meningitis and 3 patients died. After the operations our mortality rate was 20% and morbidity rate was 12% .All these results match with the results stated in the literature. Anahtar Kelimeler : Lateral ventricle, third ventricle, tumor