先天愚型(Dawn’s Syndrome)称唐氏综合征,又称21三体综合征(Trisomy)。我们从1986年3月至1989年3月共收治各种智残、体残患儿82例,其中先天愚型5例,现将典型2例报告如下。例1,男,15岁。因表情呆滞,智力、语言发育障碍于1986年3月13日入院。体检:体重32kg,身高134cm,全身肌张力低下。枕骨扃平,额部短而宽。内眦赘皮褶,眶距3.4cm,眶外缘距10cm,轻度斜视,虹膜上有布氏斑,眼外侧上斜。耳位低,耳廓小,鼻 Down’s syndrome is called Down Syndrome, also known as Trisomy 21. We from March 1986 to March 1989 were admitted to a variety of mental retardation, disabled children in 82 cases, of which Down’s syndrome in 5 cases, now the typical 2 reported as follows. Example 1, male, 15 years old. Due to dull expression, mental retardation, language development on March 13, 1986 admission. Physical examination: weight 32kg, height 134cm, whole body muscle tone is low. Occipital bones flat, forehead short and wide. Epicanthus folds, orbital distance 3.4cm, orbital margin from 10cm, mild strabismus, there is a bruise on the iris, the lateral oblique eye. Ear low, auricles, nose