Journal
PRENATAL DIAGNOSIS
Volume 30, Issue 12-13, Pages 1155-1164Publisher
JOHN WILEY & SONS LTD
DOI: 10.1002/pd.2631
Keywords
chorionic villus sampling; confined placental mosaicism; fetal development; uniparental disomy
Categories
Ask authors/readers for more resources
Objective To study the influence of types 2 and 3 confined placental mosaicism (CPM) on pregnancy outcome. Method From 13 809 chorionic villus samplings (CVSs), katyotype after long-term cultured villi (LTC-villi) was systematically performed. Next, in case of suspicion of CPM, karyotype after short-term cultured villi (STC-villi) was established to define type 2 CPM (chromosomal abnormality limited to the mesenchymal core) or type 3 CPM (chromosomal abnormality found both in the cytotrophoblast and the mesenchymal core). Confirmatory amniocentesis was performed to exclude fetal mosaicism. Uniparental disomy (UPD) testing was carried out when the abnormal cell line involved chromosomes 5, 6, 7, 15 or 16. Results Fifty-seven CPM cases were observed (57/13 809 = 0.41%) and of these, 37 were type 2 and 20 were type 3 CPM. Incidence of preterm infants, neonatal hypotrophy and adverse pregnancy outcome were comparable between patients in whom type 2 CPM was demonstrated and the control population. In contrast, for the type 3 CPM the incidence of these factors was higher than for the control population. Conclusion When a CPM is suspected, it appears essential to determine type, since type 2 has no effect on fetal development and type 3 is associated with preterm infants, low birth weight and adverse pregnancy outcome. Copyright (C) 2010 John Wiley & Sons, Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available