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Dandy-Walker综合征(Dandy-Walker syndrome,DWS)又称Dandy-Walker畸形,是以第四脑室和小脑发育障碍为特征的胎儿先天畸形,发生率约1/30 000[1]。目前Dandy-Walker畸形的分类暂无统一标准,一般分为3类:①典型性Dandy-Walker畸形,即小脑蚓部完全缺失;②变异型Dandy-Walker畸形,即小脑蚓部发育不良,伴或不伴后颅窝囊肿;③单纯后颅窝池增宽。18-三体综合征又叫Edward’s综合征,Edward’s综合征是常染色体三倍体异常中第二大常见疾病,其
Dandy-Walker syndrome (Dandy-Walker syndrome, DWS), also known as Dandy-Walker deformity, is a congenital malformation of the fetus characterized by the development of the fourth ventricle and cerebellum. The incidence of Dandy-Walker syndrome is about 1/30 000 [1]. Currently there is no uniform standard Dandy-Walker classification, generally divided into three categories: ① typical Dandy-Walker deformity, that is, complete absence of cerebellar vermis; ② variant Dandy-Walker deformity, that is, cerebellar vermis dysplasia, with or Not accompanied by cranial fossa cysts; ③ pure posterior fossa pool widened. 18-trisomy syndrome is also called Edward’s syndrome, Edward’s syndrome is autosomal triploid abnormalities the second most common disease, its