Visceral Anomalies in Thoracopagus (Two Cases)

抄録

Visceral anomalies were studied in two cases of thoracopagus which presented a complex picture. In the first case (female) except for a fused heart and a common liver, both twins had completely independent gastrointestinal tracts along with other normal viscera. In the second case (male), apart from cardiovascular anomalies, a portion of gastrointestinal tract was common to both twins indicating incomplete fission of the yolk sac. One of the twin (B') in this case had only one kidney and one suprarenal while the other twin (A') had these viscera on both sides. These anomalies may be ascribed to the absence of both umbilical arteries in the twin (B') of this case.