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. 2018 Sep 19;9(5):857–882. doi: 10.1007/s13244-018-0643-0

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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. 19 — Chordoma. Axial head CT (a) shows an osteolytic destructive lesion involving the clivus (thick arrows) with extension into the posterior sphenoid sinus (arrowhead) and impression on the pons (curved arrow). Axial T1-weighted (b), axial T2-weighted (c) and sagittal post-contrast T1-weighted (d) images demonstrate an expansile mass centred at the clivus extending into the sphenoid sinus (arrowhead), left cavernous region (short, thick arrows) and partially encasing the left internal carotid artery. This mass enhances and displaces the pituitary gland (thin, long arrow) and has mass effect on the left aspect of the pons (curved arrow)