Figure 1From: Placental mesenchymal dysplasia, a case of intrauterine sudden death of fetus with rupture of cirsoid periumbilical chorionic vesselsTransvaginal ultrasound study. An apparently normal fetus (asterisk) and villi with multiple hypoechoic cysts (arrows) at 8 weeks' gestation. Crown-rump length is 20 millimeters. Each cyst is 2-3 millimeters in diameter.Back to article page