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. 2020 Jan 7;5(1):e801. doi: 10.1097/PR9.0000000000000801

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Copyright © 2020 The Author(s). Published by Wolters Kluwer Health, Inc. on behalf of The International Association for the Study of Pain.

This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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Figure 1. — Magnetic resonance imaging identifying sacral Tarlov cysts (patient 1). (A) Sagittal view. Green arrows depict trilobed, multiseptate T2 hyperintense, T1 hypointense nonenhancing Tarlov perineurial cysts in the left L5-S1, left S1-S2, and left S2-S3 neural foramina (right S1-S2 cysts were also present and seen on other images). (B) Coronal view. Green arrows depict multiseptated T2 hyperintense, T1 hypointense perineurial cysts in the same patient. The largest cyst, at left L5-S1, tracks along the course of the L5 nerve root and measures 6 cm in greatest dimension.