Abstract
Adenoacanthoma from the thyroid gland is rare. In a 56 year old male who complained of dyspnea of two months duration, we detected a large tumor with a hard consistency around the right side of thyroid cartilage. Indirect laryngoscopy revealed right, midline vocal cord paralysis. As his condition was critical, surgery was immediately performed. The tumor was mainly located around the thyroid cartilage and extended downward to the 4th tracheal ring. The interior of the trachea was extraordinarily narrowed. A total laryngectomy which included trachea was done. Histology revealed a typical adenoacanthoma in the thyroid gland. The postoperative course was uneventful and 8 months after the surgery there has been no evidence of a recurrence.
