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甲状腺机能减退症简称甲减,是由于各种原因引起的甲状腺激素合成、分泌或生物效应不足所致的全身性内分泌疾病。 1 甲状腺机能减退症的分类 1.1 根据起病年龄分为三型①呆小病(克汀病),功能减退始于胎儿或新生儿。②幼年型甲减,功能减退始于性发育前儿童。③成年型甲减,功能减退始于成人。各型后期病情严重时均可表现为粘液性水肿。 1.2 根据病因分类:(1)甲状腺性甲状腺机能减退症:①甲状腺损坏—原因不明的粘液性水肿,可能是桥本甲状腺炎的后果。桥本甲状腺炎。甲亢碘治疗后;甲亢手术切除后;颈部疾病X线等放疗后;亚急性甲状腺炎后;胱氨酸症;甲状腺内广泛痫变(甲状腺癌或转移癌等)。②甲状腺激紊合成功能失常—缺碘性地方性甲状腺肿,碘过多(每日摄入>6mg)。药物诱发(锂、硫
Hypothyroidism referred to hypothyroidism, is due to various causes of thyroid hormone synthesis, secretion or biological effects caused by inadequate systemic endocrine disease. 1 classification of hypothyroidism 1.1 according to the age of onset is divided into three types of ① stay ailment (cretinism), hypofunction began in the fetus or newborn. ② juvenile hypothyroidism, dysfunction began in pre-sex development children. ③ adult hypothyroidism, hypogonadism began in adults. Various types of late illness can be manifested as myxedema. 1.2 According to the cause of classification: (1) thyroid hypothyroidism: ① thyroid damage - unexplained myxedema may be the consequences of Hashimoto’s thyroiditis. Hashimoto’s thyroiditis. Hyperthyroidism after iodine treatment; Hyperthyroidism after surgical resection; neck disease X-ray after radiotherapy; Subacute thyroiditis; Cystine disease; Thyroid widespread epilepsy (thyroid cancer or metastatic cancer, etc.). ② thyroid dystrophy synthesis dysfunction - iodine deficiency endemic goiter, iodine excess (daily intake> 6mg). Drug induced (lithium, sulfur