Right Ventricular Outflow Tract Obstruction in Monochorionic Twins with Selective Intrauterine Growth Restriction

Figure 3

Monochorionic placenta after color dye injection (blue and green colors for arteries, red and yellow colors for veins) showing typical features of unequal sharing. Twin B has a velamentous cord insertion (white arrow) and a small placental territory (placental share on the left side of the picture). Twin A has a paracentral cord insertion (grey arrow) and a larger placental territory (right side of the picture). The white star indicates a large arterio-arterial anastomosis, the blue stars and green stars indicate several arterio-venous en veno-arterial anastomoses, respectively.