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. 2018 Jun 12;9(4):511–526. doi: 10.1007/s13244-018-0608-3

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© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 20 — Arteriovenous malformation. A 16-year-old male with left leg weakness and progressive areflexia. a Sagittal T2 fat-saturated image demonstrates a conglomeration of flow voids within the cord parenchyma with surrounding hyperintensity. Prominent extramedullary flow voids lead to this conglomeration of vessels (arrow). b The sagittal T1 post-contrast image shows a nodule of enhancement (arrowhead). c Conventional angiogram shows an artery feeding a nidus (arrow), which is drained by a prominent vein