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Contributors J-BL and LG-C and wrote the case report. MB, NT, SB, CS and AB critically read the manuscript. SB performed ENT endoscopy and evaluation. AB was involved in expert national multidisciplinary discussion. J-BL, LG-C, MB, NT, SB, CS and AB contributed to the clinical management and the diagnosis for this patient and approved the final version of the manuscript.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.
Patient consent for publication Obtained.
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