The procedure in which a catheter inserted through the vagina is used to remove some of the protrusions from the chorion that surrounds the amniotic sac to check for deformities is called

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The procedure described is chorionic villus sampling (CVS), not amniocentesis, intrafallopian transfer, or in vitro fertilization. CVS involves inserting a catheter through the vagina and into the cervix to remove a small sample of chorionic villi, which are tiny finger-like projections on the chorion that surround the developing fetus. This sample is then tested for genetic abnormalities or other abnormalities.

The Procedure in Which a Catheter Inserted Through the Vagina