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. 2016 May 13;16:21. doi: 10.1186/s12894-016-0139-5

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© Gong et al. 2016

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. 4 — Case 4. CT scans obtained in a 2.5-year-old girl with left duplex ureters and congenital megalo-ureter. Non-enhanced scan obtained at the level of the inferior-middle pole of the left kidney shows a huge round-like area of low density (red arrow) (a). Contrast-enhanced scans were obtained at the same level as in (a), this area showed no enhancement on (b) the 26-h scan, and the tortuous contrast agent can be seen retroperitoneally (red arrow) (b). The huge round-like area of low density was intensified on the 48-h scan (red arrow) (c)