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. 2016 May 16;45:32. doi: 10.1186/s40463-016-0146-2

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© AL-Qahtani 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. 2 — a CT head axial image (patient # 1) showing a destructive recurrent mass in the right sphenoid wing, extending into middle and posterior cranial fossae with destruction of a large portion of the skull base; b CT head (patient # 4) demonstrating heterogeneous soft tissue recurrent mass involving the right mastoid air cells, mastoid bone and occipital bone associated with bone destruction