SPONTANEOUS THROMBOSIS OF AN UNRUPTURED ANTERIOR COMMUNICATING ARTERYANEURYSM - AN UNUSUAL CAUSE OF ISCHEMIC STROKE

Background Stroke caused by spontaneous thrombosis of an unruptured in tracranial aneurysm is a rare event. Case Description A 66-year-old wo man experienced a transient ischemic attack and cerebral infarctions d ue to spontaneous thrombosis of an unruptured anterior communicating a rtery aneurysm. Extension of thrombus into both anterior cerebral arte ries and the left middle cerebral artery, resulting in ischemic infarc tion in all three vascular territories, was diagnosed by CT scanning, MRI, and cerebral angiography and confirmed at autopsy. Conclusions Th is case illustrates a rare complication of an unruptured saccular aneu rysm with neuroimaging and pathological correlation. Morphological and hemodynamic factors that may have precipitated aneurysm thrombosis ar e discussed with reference to experimental models.