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A 28-year-old male asked:
What is the definition or description of: ultrasound-guided chorionic villus sampling?
1 doctor answer • 2 doctors weighed in
Dr. Linda Gromkoanswered
Family Medicine 50 years experience
Looks at chomosomes: Chorionic villus sampling enables a doctor to remove a small sample of the tissue that surrounds the early sac of pregnancy. This, then, allows the study of the chomosomes - for early diagnosis of conditions such as Down syndrome (an extra chromosome #21). It is done with ultrasound guidance at roughly 11 weeks of pregnancy. Amniocentesis is a procedure done later in pregnancy for the same reason.
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5.4k viewsReviewed >2 years ago
Last updated Feb 18, 2015
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