The thyroid gland originates from the foramen cecum present in the floor of the pharyngeal gut on the 17^th day of gestation. The gland then descends in front of the pharynx as a bilobed diverticulum which is initially patent. It reaches its final position in the neck by the 7^th week of gestation. The duct usually disappears by the 10th week of gestation. Persistence of any portion of this duct could give rise to thyroglossal cyst. Commonly these cysts could contain thyroid tissue, hence I 131 studies should be considered in all patients with suspected ectopic thyroid. In this patient occult malignancy is more likely [3]. Rarely this could be the only functioning thyroid gland tissue.