Successful endovascular embolization of a cervical internal carotid artery fenestration associated with an aneurysm: a rare case report

Background: Fenestration of the cervical segment of the internal carotid artery is a rare cerebrovascular variation, and its origin is not fully understood. There are few reports of aneurysm with fenestration of the cervical segment of the internal carotid artery. We report a case of fenestration of the cervical segment of the left internal carotid artery with a cystic aneurysm, which was treated by vascular embolization, and the follow-up results to 3 months after treatment. Case presentation: A 62-year-old male patient was admitted because of dizziness. Magnetic resonance imaging (MRI) revealed a fenestration of the cervical segment of the left internal carotid artery with a cystic aneurysm. The diagnosis was confirmed by digital subtraction angiography (DSA), and aneurysm embolization was performed. At 3 months after treatment the patient indicated that the dizziness had subsided, and he had no complaints. DSA showed that the aneurysm had not recurred. Conclusions: This case demonstrates the feasibility of interventional embolization for the treatment of fenestration of the carotid artery neck segment combined with an aneurysm.