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. 2022 Apr 11;22:135. doi: 10.1186/s12883-022-02664-8

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© The Author(s) 2022

Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Digital subtraction angiography (DSA) of internal carotid artery (ICA). a Coronal view of Maximum Intensity Projection (MIP) image shows ipsilateral, right tumor feeder (black dotted arrow). b MIP image shows contralateral, left tumor feeding artery (white arrow). c Lateral view of DSA of left ICA shows left tumor feeder (white arrow) arose from left ophthalmic artery (OphA) and left ICA-OphA aneurysm (dotted line arrow). d Lateral view of MIP image shows that left feeding artery (white arrow) and ICA-OphA aneurysm (dotted line arrow). e 3D-reconstruction view demonstrates a bleb formation (white arrowhead) in ICA-OphA aneurysm wall