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Paralysed vocal cord. Endoscope view of the larynx (voice box) of a patient, showing a paralysed right vocal cord (grey, centre left). Such a unilateral (one-sided) paralysis has a number of causes, including cancer of the larynx or surrounding tissues, an injury sustained during surgery or other unknown factors. It results in a hoarse, breathy voice. Treatment includes speech therapy and surgery.
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