BackgroundConfined placental mosaicism (CPM) represents a discrepancy in karyotype between the cells in the placenta and the cells in the fetus. The observation of multiple, chromosomally distinct cell lines in chorionic villus samples (CVS) is not an unusual finding and occurs in 1–2 per 100 samples. Some reports stated CPM is related to fetal growth restriction, but the relationship between CPM and fetal anomaly is still unclear. In this study, we focused on the fetus with anomaly and looked into placenta karyotyping.
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