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Contributors JLW assessed and diagnosed the patient, obtained consent for reporting the case in the literature, wrote the first draft of the manuscript and approved the final draft for publication. CG collated the clinical data and images for the report, contributed to writing the second and third drafts of the manuscript, and approved the final draft for publication. AK collated the pathology results, contributed to writing the second and third drafts of the manuscript, and approved the final draft for publication.
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.
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