Surgical treatment of distal anterior cerebral artery aneurysms

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Abstract
From June, 1961 to Sept., 1975, 60 patients with aneurysms of the anterior cerebral artery distal to the anterior communicating artery (ACoA) were operated on by a direct intracranial approach. In the treatment of aneurysms, control of the parent artery of the aneurysm is important, making it easier and safer to approach the aneurysm neck and to handle possible premature aneurysm rupture. Aneurysms were classified as ascending or horizontal. Aneurysms arising from the ACoA origin and including the entire portion of the knee of the corpus callosum were designated ascending aneurysms and aneurysms beyond the genu were designated horizontal aneurysms. For ascending aneurysms, bifrontal craniotomy was considered the safest approach. For horizontal aneurysms, small parasagittal craniotomy was deemed sufficient.