Footnotes

• Contributors CF: case identification, writing and submission. RS and JC: review of the article prior to submission. SL: took the USS image and provided support and guidance for the article.

• 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 Parental/guardian consent obtained.

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

• Author note Image courtesy of Dr Saeeda Latif, Frimley Health NHS Foundation Trust.