Footnotes

• Contributors SPR and RL were involved in treating the patient. All authors were responsible for analysis and interpretation of this case. RL and JC were responsible for the writing of the article. All authors were responsible for the revision of the article and contributed to the final manuscript.

• 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; externally peer reviewed.