Movement of vocal cords in endoscopic and ultrasonography examination

*Lidia Zawadzka-Głos¹, Anna Jakubowska², Michał Brzewski², Mieczysław Chmielik¹

Summary
Summary
Vocal cords paralysis is a frequent problem. Paralysis of the vocal cords in the newborn may be bilateral or unilateral and complete or partial. Bilateral vocal cord paralysis is more common than unilateral. The position of the vocal cords will usually correlate with the symptoms. Because of the correlation with other pathology, children with vocal cord paralysis should be investigated for intrathoracic and intracranial pathology. Definitive diagnosis is made by viewing the cords when the patient is awake. Cord mobility can be assessed by direct laryngoscopy and ultrasonography examination.
In Department of Paediatric Otorhinolaryngology in Warsaw, between 1998 and 2007, 56 children with vocal cords paralysis were admitted. There were 22 girls and 34 boys with ages varying from 9 days to 15 years. Endoscopic and ultrasonography examination were used for diagnosis. The US examination was performed using a high frequency transducter 7-12 MHz. Results of those examination were compared. Endoscoping findings correlated with ultrasound findings in 100% of cases. Laryngeal US is well tolerated, safe and non-invasive method of examination but the final diagnosis is based on laryngoscopy.

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