抄録
We discribe the occipital interhemispheric approach for an aneurysm on the distal posterior cerebral artery (PCA). The absence of adhesion of the occipital lobe to the falx and few bridging veins allow easy dissection between the bilateral occipital lobes. Utilization of gravity, osmotic agents, and removal of the cerebrospinal fluid provide an interhemispheric slot wide enough to observe and clip the aneurysm. Through the approach the proximal PCA, an aneurysm, and the distal PCA are located vertically as the middle cerebral artery and its aneurysm through the distal trans-Sylvian-fissure approach.
