Intracranial aneurysms, both ruptured and unruptured, still represent a major challenge for neurosurgeons who are in charge of treating such patients. Endovascular techniques have become an alternative to classical neurosurgical treatment of aneurysms in the last decade. The purpose of this article is to review knowledge about intracranial aneurysms, subarachnoid hemorrhage, complications of subarachnoid hemorrhage, and the treatment modalities applied. The extent of the text does not allow the detailed analysis of all aspects of aneurysms and subarachnoid hemorrhage, this review represents the basic knowledge in this field. The importance of endovascular techniques is emphasized. The main randomized studies in this field are described. Finally, the basic recommendations are presented.

        Key words: intracranial aneurysm, subarachnoid hemorrhage, clipping, endovascular techniques, vasospasm, hydrocephalus