A case of migratory fish bone in the thyroid gland.

Fish-bone foreign bodies represent a common condition readily identified in the pharynx. We encountered a case of fish bone in the thyroid gland. Only three other such cases have been reported in the English-language literature. This foreign body was identified by computed tomography and ultrasonography 16 days after onset, and removed through a cervical skin incision. The diagnosis and treatment of extrapharyngeal foreign bodies are discussed.