Footnotes

• Contributors All authors made a substantive contribution to the study. SB planned the case to report as an image. AKS collected the patient data and appropriate images and was responsible for the overall content as guarantor. AKS and TPS wrote the paper. AKS and SB submitted the paper. All authors endorsed the data and conclusion.

• 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.

• Patient consent for publication Obtained.

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