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During aneurysm clipping, ischemic complications may occur and require a rescue treatment, usually surgical. We present two such cases that required urgent rescue treatment, performed through an endovascular route. Our first case presented with a non-ruptured right posterior inferior cerebellar artery (PICA) aneurysm. After permanent clip positioning, occlusion of the PICA occurred. An unsuccessful attempt of clip repositioning was performed. We therefore positioned a stent obtaining complete flow restoration. Our second case was that of a ruptured giant left middle cerebral artery aneurysm with focal critical stenosis of the parent vessel, likely due to an underlying dissection. Initially, the aneurysm was secured through coiling. However, after permanent clip positioning, parent artery occlusion occurred. DSA showed occlusion of the parent artery downstream to the clip and persistence of the preaneurismatic stenosis. We achieved full recanalization through stent positioning. In both cases, there were no ischemic or hemorrhagic complications.

Endovascular rescue treatment through stent positioning after surgical clipping of intracranial aneurysms complicated by parent artery obstruction