Anterior Communicating Artery Aneurysm
Last Updated: September 28, 2018
Anterior communicating artery (ACoA) aneurysms are the most common aneurysms associated with spontaneous aneurysmal subarachnoid hemorrhage (aSAH,) accounting for ~30% of all ruptured aneurysms. In addition to SAH concentrated along the interhemispheric fissure, they may also present with intraparenchymal hemorrhage (ICH) within the basal frontal lobe or intraventricular hemorrhage (IVH) through the lamina terminalis into the third ventricle.
An isolated spontaneous basal frontal lobe (gyrus rectus) ICH, even without a clear history of associated severe headache, requires a vascular study to rule out an underlying vascular lesion.
The most common aneurysm type inadvertently overlooked during workup of patients with the diagnos...