Related Experiment Video
Updated: May 11, 2026

Accurate and Simple Evaluation of Vascular Anastomoses in Monochorionic Placenta using Colored Dye
Published on: September 5, 2011
We Should Perform a Systematic Evaluation of the Placenta
Edgar Hernandez-Andrade1, Donatella Gerulewicz1, Eleazar Soto-Torres1
1Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, Texas, USA.
Despite its critical importance, the placenta receives substantially less attention during obstetric ultrasound examinations compared to the fetus. The evaluation of the placenta is typically limited to determining its location within the uterus, particularly its relationship to the cervix. Abnormal placenta findings are the result of gross anomalies identified by chance during obstetric examinations, rather than from a systematic evaluation. Here we describe a standardized protocol evaluating four placental regions: 1) the uterine wall/decidua/chorion interface; 2) the amnion/chorion interface; 3) the placental body; and 4) cord insertion and marginal area, which can improve the identification of placental anomalies in all pregnant subjects.
Despite its critical importance, the placenta receives substantially less attention during obstetric ultrasound examinations compared to the fetus. The evaluation of the placenta is typically limited to determining its location within the uterus, particularly its relationship to the cervix. Abnormal placenta findings are the result of gross anomalies identified by chance during obstetric examinations, rather than from a systematic evaluation. Here we describe a standardized protocol evaluating four placental regions: 1) the uterine wall/decidua/chorion interface; 2) the amnion/chorion interface; 3) the placental body; and 4) cord insertion and marginal area, which can improve the identification of placental anomalies in all pregnant subjects.

