Footnotes

• Contributors JMH proposed the original idea for the manuscript. RT, SJ and BHM wrote the original manuscript. RT, SZ-V and JC were involved in the patient's clinical care. RDG performed histological analysis and RT performed radiological analysis. All authors read and approved the final draft submitted for publication.

• Competing interests None.

• Patient consent Obtained.

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