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  • Title: Matricidal cavernous aneurysms: a multicenter case series.
    Author: Dacus MR, Nickele C, Welch BG, Ban VS, Ringer AJ, Kim LJ, Levitt MR, Lanzino G, Kan P, Arthur AS, Endovascular Neurosurgery Research Group (ENRG).
    Journal: J Neurointerv Surg; 2019 Jun; 11(6):584-590. PubMed ID: 30814330.
    Abstract:
    BACKGROUND: Cavernous carotid artery aneurysms (CCAs) represent a unique subset of intracranial aneurysms due to their distinct natural history and the anatomy of the cavernous sinus. Enlarging CCAs can cause elastic compression of the parent internal carotid artery (ICA). We suggest defining aneurysms that cause luminal stenosis of their parent vessels as 'matricidal aneurysms.'Though many patients are asymptomatic, presenting symptoms of CCAs include ophthalmoplegia with resulting diplopia, vision changes, pain, ptosis, facial numbness, and cavernous-carotid fistula. Less commonly, patients with CCAs can present with epistaxis, subarachnoid hemorrhage, and-in cases of matricidal aneurysms-ischemia due to stenosis. The proper management of stenosis caused by a matricidal CCA is not well established and may not be intuitive. METHODS: We present a multicenter retrospective case series of patients with matricidal CCAs. RESULTS: Forty patients with matricidal aneurysms presented with both asymptomatic and symptomatic stenosis. These patients were either treated with conservative medical management, coiling, flow diversion, or endovascular sacrifice of the parent artery. Planned treatment modalities were not executed in 11 cases (28% treatment failure rate). Presenting symptoms, patient outcomes, and follow-up data are presented for all cases. CONCLUSION: Matricidal aneurysms require careful consideration and planning. The restricted anatomy of the cavernous sinus can make successful execution of endovascular interventions more difficult. Direct elastic compression of the parent artery does not respond to angioplasty and stenting in the same way atherosclerotic stenosis does. Because of this, planning for the possibility of parent vessel sacrifice is important.
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