Footnotes

• Contributors BXL collected and interpreted the data and wrote the initial draft of the manuscript. NBHN interpreted the data, did the literature review, wrote the initial draft of the manuscript and revised the manuscript critically for important intellectual content. WF and VDWN interpreted the data and revised the manuscript critically for important intellectual content. APT provided the radiology images, interpreted the data and revised the manuscript critically for important intellectual content. JL designed the case presentation, collected and interpreted the data, performed the literature review and revised the manuscript critically for important intellectual content.

• Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

• Competing interests None declared.

• Provenance and peer review Not commissioned; internally peer reviewed.