[Teratoma of the thyroid gland in children]

Two cases of teratoma of the thyroid gland occurring in children are presented. Both tumors were discovered shortly after birth and were not associated with clinical hypothyroidism. One of the patients was thoroughly studied from the endocrinological point of view utilizing several techniques. There was some iodine uptake by the gland, formation of tirosine and thyroid hormones as well as their release into the blood serum. The clinical and pathological features of teratoma of the thyroid are discussed.