地方性甲状腺肿是甲状腺肿大病,甲状腺常可肿得相当大。該病流行于一定的“生物地貭化学地区”,此地区之特点是碘不足,有或多或少一定数量的居民患得此病。目前认为方性甲状腺肿发生和发展的主要原因是外界环境进入人体碘不足。这个100多年前提出的学說是根据碘对甲状腺激素正常形成过程作用的了解,根 Endemic goiter is a goiter, thyroid often swollen quite large. The disease is endemic to certain “biotopes and chemical areas,” a region characterized by a lack of iodine and a greater or lesser number of residents suffering from the disease. At present, the main reason for the occurrence and development of endemic goiter is the lack of iodine in the external environment. The theory put forward more than 100 years ago is based on the understanding of the role of iodine in the normal formation of thyroid hormones,