Footnotes

• Contributors CCG and CHR contributed to the conception and design of the study. ARM oversaw the assistance labour, requested complementary tests and indicated treatment in conjunction with CCG and CHR. The histological diagnosis was made by RK. CCG, ARM and CHR contributed to manuscript drafting and revision. All authors reviewed and approved the final manuscript. Guarantor: CHR.

• 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.

• Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

• Competing interests None declared.

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