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With the development of stent material, the use of stents in neurointerventions is increasing. Under these circumstances, it is essential to understand the properties of these stents to determine their role and implications in the endovascular treatment of cerebral aneurysms.
Here, we present a case of early migration of an intracranial stent during treatment of a dissecting aneurysm.
Patient:
A 57-year-old female patient presented with a sudden headache and subarachnoid haemorrhage secondary to a small posterior cerebral artery (PCA) aneurysm.
Two Enterprise stents (4.5 x 14 mm) were deployed in the PCA through the aneurysm neck. CT angiogram 2 days later showed significant migration of the stent into the basilar artery. But there was no filling of previous noted PCA dissecting aneurysm.
A repeat angiogram one week later also showed complete occlusion of the PCA aneurysm and no further stent migration from the previous CT angiogram.
The patient was discharged 3 weeks later without neurological deficit.
This is an unequivocal case of early spontaneous migration of a self-expanding intracranial stent.
We believe that, when there is a significant discrepancy in luminal diameter and suboptimal wall apposition, the physician should be aware of the possibility of stent migration.
Early imaging following stent deployment may be indicated in these cases.
