[Certain problems of surgical treatment of third ventricle tumours].

The authors present an outline of the modern knowledge on the surgery of third ventricle tumours. Both anatomy and most common pathology of the third ventricle is discussed. The operative procedures are divided on the basis of tumour localisation into anterior or posterior third ventricle ones. In conclusion it is stressed that in spite of existing controversies these operative procedures are now performed with good results in many neurosurgical centers.