Picture of Twin-to-Twin Transfusion
Twin-to-twin transfusion is a condition that happens in some sets of twins. When twins have a common circulatory supply in utero, one twin may receive more blood supply than the other. This may lead to differences in the blood volume and skin color of the twins. The photo depicts a newborn set of twins. The one on the right is larger and has received more blood. The baby's skin is reddish in color. The twin on the left is smaller and anemic. In time, normal blood counts will develop in both babies.
Text Reference: The Twin to Twin Transfusion Syndrome Foundation: "What Is Twin to Twin Transfusion Syndrome?"