chorionic villus


Also found in: Thesaurus, Medical, Encyclopedia, Wikipedia.

chorionic villus

n.
Any of the minute fingerlike projections of the fetal chorion that contain fetal blood vessels and that combine with maternal uterine tissue to form the placenta.

cho′rion′ic vil′lus


n.
one of the branching outgrowths of the chorion that together with maternal tissue form the placenta.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chorionic villus - one of the tiny villi that stick out of the fetal chorion and combine with the mother's uterine tissue to form the placenta
chorion - the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
villus - a minute hairlike projection on mucous membrane
References in periodicals archive ?
DNA was obtained from chorionic villus cells, amniotic cells or fetal skin fibroblasts without cell culture using the QIAamp DNA Mini Kit (Qiagen, Germany).
Until recently, amniocentesis, chorionic villus sampling (CVS), maternal serum screening and nuchal translucency (NT) scan were the primary diagnostic and screening methods for chromosomal abnormalities.
Patients should be counseled that cell-free DNA screening does not replace the precision obtained with diagnostic tests, such as chorionic villus sampling or amniocentesis, and therefore, is limited in its ability to identify all chromosome abnormalities," the groups wrote in the updated opinion.
Conventional invasive prenatal genetic tests such as amniocentesis and chorionic villus sampling (CVS) are associated with the risk of miscarriage; hence, these are being replaced with new non-invasive prenatal tests.
In contrast to invasive diagnostic tests like amniocentesis and chorionic villus sampling (CVS), that carry one to two per cent risk of causing miscarriages, Veracity does not pose any threat to the foetus, Anastassiades said.
Currently, prenatal diagnosis of Wilson disease is performed by analyzing fetal cells collected by either chorionic villus sampling or amniocentesis.
August 8 by aspiration cytologic type "Chiba" for amniocentesis and chorionic villus sampling, are asked to send technical details, IFU if available and / or any other documentation showing the indication of use of the needle.
According to Dr Ramanathan, “This new method of risk assessment has resulted in a shift to first trimester diagnostic testing by way of chorionic villus sampling (CVS) in the high risk group of women identified by screening with nuchal translucency and serum biochemistry, and also far less diagnostic testing, which itself carries a risk of miscarriage.
This new method of risk assessment has resulted in a shift to first trimester diagnostic testing by way of chorionic villus sampling (CVS) in the high-risk group of women identified by screening with nuchal translucency and serum biochemistry, and also far less diagnostic testing, which itself carries a risk of miscarriage.
However, Dr Al Hejari revealed many still chose to undergo a Chorionic Villus Sampling (CVS) test at around 11 weeks and then get an abortion if a hereditary disease was detected, often travelling abroad for the procedure - including to Saudi Arabia, Iran and Egypt.
To contain the spread of this fatal disease, his foundation also creating awareness amongst people and advised those families where already a thalassemia patients exist to do Chorionic villus sampling (CVS) test after three months of pregnancy and if the test was positive the doctors advised for abortion.
But it identifies fewer chromosomal abnormalities than combination screening or the more invasive chorionic villus sampling and amniocentesis.