Abstract
The case of a 75-year-old man with squamous cell carcinoma of the thyroid gland invasive to the cervical trachea was reported. Squamous cell carcinoma originating in the thyroid gland is uncommon and is reported to have a poor prognosis. The patient came to our department with complaints of a fever of unknown origin and a large mass in the left anterior neck. He was diagnosed as having squamous cell carcinoma of the thyroid gland from the specimen biopsied through a needle, and it was suspected that the tumor had invaded the tracheal wall. He underwent a radical resection of the thyroid tumor concomitant with a left radical neck dissection and a oval-shape resection of the tracheal wall. Secondary reconstruction of the trachea was performed with a skin flap in which the nasal septal cartilage was implanted. A satisfactory postoperative status was obtained.