Discrepancy between non-invasive prenatal testing result and fetal karyotype caused by rare confined placental mosaicism: A case report

Figure 2 The copy-number variation sequencing results in different samples. A: Amniotic fluid cells, fetal muscle and umbilical cord suggested the fetal karyotype was 47,XXY; B: The placenta of fetal face (both center and margin) and margin of maternal face showed a 47,XY,+21/46,XY mosaic; C and D: The center of placenta and maternal face demonstrated a 47,XY,+21/47,XXY/46,XY mosaic. X-axis: Chromosome; Y-axis: Copy number.