{"id":"2f41dfb4-5a2b-4760-bfa1-6e885f486ab9","slug":"opening-of-unusual-vascular-collaterals-leads-to-early-recanalization-of-a-giant-intracavernous-carotid-artery-aneurysm-following-common-carotid-artery-occlusion-a-case-report-and-literature-review","title":"Opening of unusual vascular collaterals leads to early recanalization of a giant intracavernous carotid artery aneurysm following common carotid artery occlusion: A Case report and literature review","authors":["Ana M. Castaño-Leon","Jose F. Alen","Alfonso Lagares"],"abstract":"Background: Parent artery occlusion (PAO) with or without bypass surgery is a feasible treatment for large intracavernous carotid artery (ICCA) aneurysms. The ideal occlusion site (internal or common carotid artery [CCA]) and ischemic complications after PAO have received special attention since the description of the technique. Unfrequently, some patients can also develop unusual external carotid artery-internal carotid artery collateral pathways distal to the ligation site that can explain the failure to aneurysm size reduction. Case Description: We describe a rare case of delayed refilling of a large ICCA aneurysm partially thrombosed which early recanalized after surgical ligation of the cervical CCA through an unusual collateral pathway. Conclusion: Based on our experience, we recommend periodic long-term follow-up neuroimaging, especially in those cases where potential collateral branches have not been clearly identified in the preoperative studies.","thumbnailUrl":"https://sni-digital-videos.s3.amazonaws.com/articles/2f41dfb4-5a2b-4760-bfa1-6e885f486ab9/featured/hero-1781563542283.png","publishDate":"2020-04-04T00:00:00.000Z","doi":"10.25259/SNI_597_2019","categories":["Neurovascular","Case Report"],"fullTextUrl":"https://surgicalneurologyint.com/wp-content/uploads/2020/04/9943/SNI-11-62.pdf"}