Footnotes

• Contributors RDM contributed to conception and design of the case report. He helped acquire figure 1. He drafted the article. AL, BD and AFW contributed to conception and design of the case report. They helped revise it critically for important intellectual content. They gave final approval of the version to be published. SY provided the genetic analysis in figure 2. He gave final approval of the version to be published.

• Competing interests None.

• Patient consent Obtained.

• Ethics approval This is a case series report and so ethical approval was required. We obtained signed consent from the patient to use his images for our report.

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