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Vocal-cord paralysis after treatment of thyrotoxicosis with radioiodine.

Experience has shown that radioiodine (131I) is a convenient and safe method of treatment for thyrotoxicosis. Injury to the recurrent laryngeal nerve causing vocal-cord paralysis is an unexpected complication of this treatment, but a recognized hazard of thyroid surgery (Lancet, 1970). This is the first report of vocal-cord paralysis occurring in the United Kingdom after radioiodine treatment for thyrotoxicosis.