National Research Institute of Tuberculosis and Lung Disease (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran TANAFFOS (Respiration) 1735-0344 9 2(spiring) 2010 06 01 Dysphonia and Cervicomediastinal Mass, Very Unusual Presentation of Hydatid Cyst 61 63 241184 EN Mohammad Behgam Shadmehr Lung Transplantation Research Center Department of Thoracic Surgery Aidin Pirzeh Department of Thoracic Surgery Mehrdad Arab Department of Thoracic Surgery Tracheal Disease Research Center, NRITLD, Shahid Beheshti University M.C, TEHRAN-IRAN. Azizollah Abbasi Dezfouli Lung Transplantation Research Center Department of Thoracic Surgery Mojtaba Javaherzadeh Department of Thoracic Surgery, Tracheal Disease Research Center, NRITLD, Shahid Beheshti University M.C, TEHRAN-IRAN. Saviz Pejhan Department of Thoracic Surgery Abolghasem Daneshvar Kakhki Department of Thoracic Surgery Roya Farzanegan Department of Thoracic Surgery Journal Article 2021 01 01 Hydatid disease, still endemic in developing countries, involves the liver and the lungs of the vast majority of cases. We report a very rare presentation of hydatid disease in a 35 year-old man with a cervicomediastinal mass and vocal cord paralysis, suspected of thyroid tumor. Surgery was curative and dysphonia disappeared completely. (Tanaffos 2010; 9(2): 61-63) https://www.tanaffosjournal.ir/article_241184_5a9dd65aa159eb5170c7738a810da2e9.pdf