[Atypical thyrogloss cyst].
UNLABELLED: The thyrogloss cysts present themselves usually as unique tumorations in the anterior cervical zone, more frequently in the second decade of life and affecting equally the two sexs. They move typically with the movements of deglution and can increase its volume with infections processes. In seldom occasions, the thyrogloss cysts can present symptoms as dysphonia, dysphagia or dyspnea facts that can suggest its laryngeal extension. METHODS: We present a case of a patient affected by dysphonia of long evolution, associated to the presence of a cervical mass. The CT showed a cervical cyst with extension to the left preepiglottic and paraglottic space with compression of the left thyroid wing. Although the clinic impression was a laryngeal neoplasia, the CT helped to realize the diagnosis ofthyrogloss cyst. During the surgery the thyrogloss cyst was removed with success, with the technique of Sistrunk and the patient recovered the voice. CONCLUSIONS: We present this case and realize a bibliographic revision on thyrogloss cysts, with atypical symptoms. We discuss also the role of CT in the diagnostic process in these types of processes.