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Fenestration of the supraclinoid internal carotid artery arising from the paraclinoid aneurysmal dilatation and fusing with the origin of the posterior communicating artery: a case report

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Abstract

We report an extremely rare case of fenestration of the supraclinoid internal carotid artery (ICA) diagnosed by magnetic resonance (MR) angiography. The smaller channel arose from the paraclinoid ICA aneurysmal dilatation, and the posterior communicating artery arose from the distal end of the fenestration. Careful observation of MR angiographic images, including source images, is important to detect rare arterial variations, and their identification on MR angiography is aided by the creation of partial maximum-intensity-projection images and partial volume-rendering images.

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Acknowledgments

We thank Rosalyn Uhrig, M.A. for editorial assistance in the preparation of this manuscript.

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Authors and Affiliations

  1. Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan

    Akira Uchino

  2. Social Medical Corporation KAN-ETSU, KAN-ETSU Hospital, Tsurugashima, Japan

    Masahiko Tanaka

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  1. Akira Uchino
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  2. Masahiko Tanaka
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Correspondence to Akira Uchino.

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Uchino, A., Tanaka, M. Fenestration of the supraclinoid internal carotid artery arising from the paraclinoid aneurysmal dilatation and fusing with the origin of the posterior communicating artery: a case report. Surg Radiol Anat 39, 581–584 (2017). https://doi.org/10.1007/s00276-016-1753-3

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  • DOI: https://doi.org/10.1007/s00276-016-1753-3

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