Unilateral Laryngeal Paralysis versus Ankylosis: a cohort st
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Unilateral laryngeal immobility (ULI) can result from paralysis or ankylosis of the cricoarytenoid joint. This study states that the symptoms and treatment differ in both types but the natural evolution is the same.

The aim of this study was to compare clinical features, etiologies, spontaneous recovery, and evolution after surgical treatment of ULI according to its mechanism.

In this longitudinal observational cohort study, 994 patients were included, 56.4% male and with a mean age of 58 years. Overall, 91% had paralysis and 9% had ankylosis.

--Dysphonia was the main symptom in both groups. Dyspnea was more frequent in patients with ankylosis whereas dysphagia was more frequent in those with paralysis.

--With a mean follow?up of 2.3 years, spontaneous recovery did not differ according to ULI’s etiology.

--Overall, 37.1% underwent surgical treatment, and paralysis was associated with a lower odds of treatment failure over a mean follow?up of 3.1years.

In conclusion, ULI resulting from paralysis or ankylosis differ in their symptoms and responses to surgical treatment, whereas natural evolution was similar.

Clinical Otolaryngology
Source: https://doi.org/10.1111/coa.13792
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