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Radiology findings in adult patients with vocal fold paralysis.

Robinson S, Pitkäranta A

Helsinki Medical Imaging Centre, University of Helsinki, Haartmaninkatu, Helsinki. s.robinson@dzu.at

AIM: To compile imaging findings in patients with vocal fold paralysis. MATERIALS AND METHODS: A retrospective analysis of the medical charts of 100 consecutive patients, admitted to our department with vocal fold paralysis was undertaken. After laryngoscopy, patients were referred for radiological work-up depending on their clinical history and clinical findings. Ultrasound of the neck and/or contrast-enhanced spiral computed tomography (CT) of the neck and mediastinum was performed, extending to include the whole chest if necessary. In one patient, CT of the brain and in two patients, magnetic resonance angiography was undertaken. Analysis of the clinical and radiological data was performed to assess the most frequent causes for vocal fold paralysis. RESULTS: In 66% of patients, the paralysis was related to previous surgery. Thirty-four percent of cases were labelled idiopathic after clinical examination. After imaging and follow-up, only 8% remained unexplained. Nine patients suffered from neoplasms, four from vascular disease, and 12 from infections. One patient developed encephalomyelitis disseminata on follow-up. CONCLUSION: Thorough radiological work-up helps to reduce the amount of idiopathic cases of vocal fold paralysis and guides appropriate therapy.

Published 18 September 2006 in Clin Radiol, 61(10): 863-7.
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