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Treatment of an infundibular aneurysm by posterior communicating origin disconnection, induced flow reversal and flow diversion after attempted surgical clipping: Case report

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Infundibular aneurysms are rare lesions that present unique challenges for both surgical and endovascular approaches. We present a case of a 58-year old man with an incidental 7.5 × 3 mm infundibular aneurysm… Click to show full abstract

Infundibular aneurysms are rare lesions that present unique challenges for both surgical and endovascular approaches. We present a case of a 58-year old man with an incidental 7.5 × 3 mm infundibular aneurysm that incorporated the origin of the posterior communicating artery (PCoA). The fusiform aneurysm incorporated the supraclinoid ICA to the terminus. An attempt at surgical clip reconstruction of the aneurysm to preserve the PCoA was not technically possible due to atherosclerosis at the aneurysm neck. The aneurysm was treated with disconnection of the PCoA origin, induced flow reversal and placement of a flow diverter, after confirmation of adequate collateral flow to the PCoA perforators from the posterior circulation. The case illustrates important concepts in the evaluation and management of infundibular aneurysms, including both reconstructive and deconstructive strategies.

Keywords: posterior communicating; induced flow; flow reversal; aneurysm; case; infundibular aneurysm

Journal Title: Interventional Neuroradiology
Year Published: 2022

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