Cerebral Aeurysms Associated with Brain Tumor: Report of Three Cases

ABSTRACT

The authors present three cases of intracranial aneurysm associated with brain tumors. Two cases were unruptured intracranial aneurysms(one was located at the origin of anterior choroidal artery of right internal carotid artery and the other at the bifurcation of right middle cerebral artery). Which were found incidentally during the transcranial approaches to pituitary adenoma and right frontal glioblastoma multiforme respectively. As preoperative angiography was not performed in those cases, there was some difficulty in clipping the neck of the aneurysms. The third case presented with sudden headache and vomiting, and her brain computed tomography, magnetic resonance imaging and cerebral angiography showed subarachnoid hemorrhage, five anterior and one posterior circulation aneurysms as well as a pituitary adenoma. The patient refused the operation. It is well known that some brain tumors, such as pituitary adenoma, glioma, meningioma, are often associated with intracranial aneurysms. In planning the treatment of those brain tumors, preoperative angiography seems essential to know the status of the vessels adjacent to the tumors and to rule out incidental aneurysms.