Although echinococcosis is not rare in Turkey, the location of a hydatid cyst in the thyroid is unusual. It usually presents itself as a solitary nodule, which may mimic a thyroid nodule. The routine use of aspiration cytology in the workup of cases of single thyroid nodules may complicate the further management of patients with a hydatid cyst of throid; anaphylaxis and dissemination may occur and technical difficulties may be experienced during operation. A case of echinococcal cyst of the thyroid presented as a single thyroid nodule, suspected to be a colloidal cyst, is reported.
Keywords: Thyroid nodule, echinococcosis