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To translate and cross-culturally adapt the Thyroidectomy-Related Voice Questionnaire (TVQ) to Brazilian Portuguese. We divided the process of translation and cross-cultural adaptation into the following stages two independent translations; synthesis of the translations; analysis by an expert committee; pretest; back-translation; final synthesis; and final version. We performed the pretest with 20 patients before or after thyroidectomy. We characterized the sample by means of descriptive analysis, and calculated the agreement between the