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作者因胎儿的父亲染色体平衡易位而进行羊膜腔穿刺,所收集资料和理论风险进行比较,胎儿染色体不平衡发生率很低(<15%).实际上,在计划进行羊膜穿刺时(16～18周),许多这种妊娠已经自然流产.因此,对胎儿不平衡染色体的研究常是不适用的.本文主要描述因父亲易位引起染色体结构不平衡的受累胎儿的细胞遗传学和病理学所见.此患家系图如下:
Amniocentesis was performed due to a fetal chromosomal translocation of the fetus and the data collected were compared with theoretical risks and the incidence of fetal chromosomal imbalance was very low (<15%). In fact, at the time of planned amniocentesis (16 - 18 weeks), many of these pregnancies have been spontaneous abortion, therefore, the study of fetal unbalanced chromosomes is often not applicable.This paper mainly describes the cytogenetics and pathology of fetuses affected by imbalanced chromosomal structure due to father’s translocation See this family chart is as follows: