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本文报告一白人妇女,32岁,怀孕6次。妊娠3个月时终止妊娠3次,流产1次,有一个正常的女儿和本次妊娠。在17.6周时经超声检查胎儿正常。但经羊水细胞培养,进行染色体分析,在3个培养瓶中发现46,XX/47,XX,+12。约15%的培养羊水细胞为12号染色体三体型嵌合体,因此被终止妊娠。流产胎儿内脏的肉眼和组织学检查正常,显微镜学检查显示胎盘绒毛成熟。胎儿组织染色体分析表明39个胎盘活检细胞中有1个12号染色体三体型嵌合体。剩余157个组织细胞检查为46,XX。
This article reports a white woman, 32 years old, 6 times pregnant. 3 months of pregnancy termination of pregnancy 3 times, 1 abortion, there is a normal daughter and the pregnancy. Fetal ultrasound was normal at 17.6 weeks. However, amniotic fluid cell culture, chromosome analysis, found in 3 flasks 46, XX / 47, XX, +12. Approximately 15% of cultured amniotic fluid cells are chromosome 12 trisomy and are therefore terminated. Abortion fetal visceral naked eye and histological examination was normal, microscopic examination revealed placental villi maturity. Fetal chromosome analysis showed that one of the 39 placental biopsies had one chromosome 12 trisomy 12. The remaining 157 tissue cells were examined as 46, XX.