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Contributors RP prepared the manuscript and procured the clinical and radiological images. RB diagnosed the case at the outpatient clinic. AB conceptualised the manuscript and provided overall guidance.
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 Obtained.
Provenance and peer review Not commissioned; internally peer reviewed.
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