Footnotes

• Contributors LMAW is the guarantor of the article. Her contribution includes—identifying the case, writing the article, doing literature search, liaising with radiology to acquire images, obtaining consent from parents and submitting the article to the journal. IS: peer reviewed the article, provided support in literature search, helped frame the structure of the answers and primarily managed the case. RG: provided the initial care to the patient in district general hospital.

• Competing interests None declared.

• Patient consent Parental/guardian consent obtained.

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