18号染色体长臂部分单体患者较为罕见,我室于1990年3月发现一例患儿,并对其皮纹进行了分析,现报告如下。患儿,男,3岁,因智力低下就诊。患儿为第1胎,出生体重3250g,出生时窒息5分钟,患儿出生时母龄25岁,父龄27岁,父母均身体健康,无化学药物及放射线 On the 18th chromosome long arm partial monomer is relatively rare, my room in March 1990 found a case of children, and its dermatoglyphics were analyzed, are as follows. Children, male, 3 years old, due to mental retardation treatment. Children with first birth, birth weight 3250g, birth asphyxiation for 5 minutes, the child was born at the age of 25 years old, father 27 years old, both parents were healthy, no chemical drugs and radiation