RT Book, Section
A1 Fleischer, Arthur C.
A1 Abramowicz, Jacques S.
A1 Gonçalves, Luis F.
A1 Manning, Frank A.
A1 Monteagudo, Ana
A1 Timor, Ilan E.
A1 Toy, Eugene C.
SR Print(0)
ID 1151027605
T1 Invasive Diagnosis of the Fetus
T2 Fleischer's Sonography in Obstetrics and Gynecology: Textbook and Teaching Cases, 8e
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9781259641367
LK obgyn.mhmedical.com/content.aspx?aid=1151027605
RD 2024/04/19
AB Key  TermsChorionic  villus  sampling  (CVS):  an  invasive  procedure  performed  for  first-trimester  prenatal  diagnosis.  CVS  is  typically  performed  between  70  and  91  days  after  the  LMP.  In  the  procedure,  tissue  is  withdrawn  from  the  villi  (vascular  fingers)  of  the  chorion,  a  part  of  the  placenta,  and  examined.Chorion  frondosum:  the  cellular,  outermost  extraembryonic  membrane  composed  of  trophoblastic  cells  that  develops  villi  and  forms  the  fetal  component  of  the  placenta.Fluorescent  in  situ  hybridization  (FISH):  rapid  method  of  assessing  targeted  chromosomal  abnormalities  such  as  trisomy  21,  18,  or  13.First-trimester  screening:  a  method  of  screening  for  chromosomal  abnormalities  in  the  first  trimester  using  two  biochemical  tests,  PAPP-A  and  hCG,  as  well  as  sonographic  nuchal  translucency  measurement.