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Mosaicism confined to the placenta
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Mosaicism confined to the placenta

Chorionic villus sampling (CVS) is a technique that allows early detection of fetal abnormalities by extracting and analyzing cells from the chorion, the tissue from which the placenta originates.

Although CVB is a very reliable technique, in 1% of cases it can lead to a questionable result due to mosaicism confined to the placenta. This is because the placenta contains cells with chromosomal alterations, but the fetus has developed from a correct cell line and is therefore healthy.

By (gynecologist), (embryologist) and (psychologist).
Last Update: 02/11/2022