Endovascular management of a collateral network aneurysm in a patient with spontaneous internal carotid artery occlusion

Abstract

Spontaneous “non-moyamoya” arterial occlusion of the intracranial arteries is very unusual. Progressive occlusion of a major intracranial artery, independently from the etiology, can lead to the development of collateral arterial networks that supply blood flow to distal territories beyond the occlusion. These collateral arteries are typically small and conduct low flows, but the hemodynamic stress within them can lead to aneurysm formation within the collateral network. In this report we present a case of spontaneous internal carotid artery occlusion and collateral network aneurysm for the first time in the literature and discuss the main features of the etiology and endovascular treatment of this rare, challenging aneurysm.

Keywords

Internal carotid artery spontaneous occlusion collateral aneurysm endovascular management

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References

Rodríguez-Hernández

Miric

. Aneurysms associated with non-moyamoya collateral arterial networks: report of threecases and review of literature. Neurosurg Rev 2011; 34: 517–522.

Fukawa

Aihara

Wakasa

. Middle cerebral artery occlusion with moyamoya phenomenon – 2^nd report: report of an autopsy case. No Shinkei Geka 1982; 10: 1303–1310.

Seki

Fujita

Mizutani

. Spontaneous middle cerebral artery occlusion leading to moyamoya phenomenon and aneurysm formation on collateral arteries. Surg Neurol 2001; 55: 58–62.

Liu

H-M

Lai

D-M

Y-K

. Aneurysm in twig-like middle cerebral artery. Cerebrovasc Dis 2005; 20: 1–5.

Kim

Kwon

Jung

. Endovascular treatment of ruptured aneurysm or pseudoaneurysm of the collateral vessels in patients with moyamoya disease. Neurosurgery 2009; 65: 1000–1004.