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The following features of right vocal cord paralysis are demonstrated:
- dilatation of the right vallecula
- fullness and medial displacement of the right aryepiglottic fold
- thickening and medial displacement of the right vocal cord
- dilatation of the right piriform sinus
- enlargement of the right laryngeal ventricle.
There are surgical clips indicating prior thyroidectomy, and peri-operative injury to the right recurrent laryngeal nerve is the likely aetiology in this patient.