由于羊水细胞培养,染色体制备技术在产前诊断中的应用,已有不少产前诊断染色体异常儿的报告。但产前诊断遗传的衍生 X 染色体 der(X),t(X;Y),尚未见报道。本院产前诊断中发现一例,现报告如下。病例报告孕妇26岁,第二胎孕4月,末次月经1985年1月12日。因前次妊娠孕4~+月自然流产 Due to amniotic fluid cell culture, chromosome preparation technology in prenatal diagnosis, there are many prenatal diagnosis of chromosomal abnormalities in children. But the prenatal diagnosis of inherited derivative X chromosome der (X), t (X; Y), has not been reported. A case of prenatal diagnosis found in our hospital, the report is as follows. Case report pregnant women 26 years old, the second pregnancy in April, the last menstrual January 12, 1985. Due to the previous pregnancy, pregnancy 4 ~ + spontaneous abortion