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. 2018 Dec 3;13:306. doi: 10.1186/s13018-018-1009-5

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© The Author(s). 2018

Open AccessThis 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. 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.

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Fig. 1 — Typical case (case number 2). A 71-year-old man was diagnosed with having L5–S1 infectious spondylitis. A sagittal and axial T2-weighted MRI revealed L5–S1 infection with a paraspinal abscess (a, b). Unilateral percutaneous endoscopic debridement and drainage was performed (e, h). On endoscopic views, after the necrotic tissue and pus were discharged, the chapped disc was evident (f, g). Postoperative sagittal T2-weighted MRI at the 1 week (c) and 1 month (d) follow-ups demonstrated a decrease in the abnormally high signal in the L5/S1 intervertebral disc and a disappearance of the abscess.