[Giant aneurysms of the basilar artery. Six cases].

The authors describe 6 cases of giant aneurysm of the basilar artery diagnosed in the Neurology Department of the Hospital Clínico Universitario of Zaragoza over the last 8 years by cerebral CT, arteriography and NMR with the clinical, diagnostic, and evolutive features of the same being reported. In 2 cases the clinical manifestations initiated as subarachnoid hemorrhage, in another two as AIT, in the fifth case as cerebral infarction and in the sixth case with pseudotumoral clinical manifestations with a necropsy study being available in the latter case. Three of the 6 patients died and of the remaining three only one was, successfully operated on. Anatomopathologic, clinical, therapeutic and diagnostic aspects of giant aneurysms of the basilar trunk are also reviewed with NMR being recommended as the technique of choice in diagnosis.