Ultrasonic diagnosis and prognosis of chorionic bump in first-trimester pregnancy

Abstract

Objective To study the value of ultrasonic diagnosis of chorionic bump in early pregnancy and the relationship between the sonographic features and the pregnancy outcome. Methods A retrospective analysis of the ultrasonography of 76 432 cases in early pregnancy was designed, including 137 cases with chorionic bump, their pregnancy outcomes were counted, and were compared with the control group of 8 139 cases of early pregnancy without chorionic bump. The sonographic features of chorionic bump, such as the size and number were analyzed. Results There were 55 cases of miscarriage in 137 cases, the rate happened in early pregnancy was 40.1%. The rate of miscarriage between the chorionic bump group and the control group had statistical difference(P=0.000). The chorionic bump group was divided into two subgroups according to the different number of chorionic bump, single and multiple bumps, the rates of abortion were 35.2% and 80%, respectively. There was significant difference between the two sub groups in the rate of miscarriage(P=0.001). In 82 cases of intrauterine live pregnancy, 73 cases were found the disappearance of chorionic bump in the early stage of pregnancy. Conclusions Diagnosis of chorionic bump in early pregnancy has some clinical value, and the first trimester is the critical period to determine the outcome of pregnancy. Key words: Ultrasonography, prenatal; Chorion; Pregnancy trimester, first; Pregnancy outcome; Abortion, spontaneous