PMC4476138_01
Preoperative three-dimensional digital subtraction angiography, axial view, showing an aneurysm (white arrow) and its relationship to the posterior communicating artery (white arrowheads) and surrounding structures. A: Anterior, P: Posterior, R: Right, L: Left
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F1
Three-dimensional digital subtraction angiography revealed a saccular aneurysm arising on the right PCoA itself in the distal portion of the PCoA [Figure 1].
Intraoperative photographs (a and c) and schematic drawing (b). CN III: Oculomotor nerve, ICA: Internal carotid artery, PCA: Posterior cerebral artery, PCoA: Posterior communicating artery, Th a.: Thalamoperforating artery, *Aneurysm
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F2
Whole length of the PCoA, from the junction of the internal carotid artery (ICA) to the junction of the PCA was confirmed [Figure 2].
Postoperative three-dimensional digital subtraction angiography, axial view, showing the obliteration of the aneurysm and the patency of the posterior communicating artery (white arrow)
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F3
Follow-up cerebral angiography 23 days after the operation showed disappearance of the aneurysm [Figure 3].