Figure 2. Complementary echocardiogram and tomography angiography. A) Echocardiogram showing 2 hearts sharing the same pericardium. B) Echocardiographic section identifying the following structures: descending aorta, left pulmonary artery, and persistence of the ductus arteriosus and its measurements, where 1 = pulmonary ampulla, 2 = aortic ampulla, and 3 = length. C) Tomography with bone reconstruction individualizing the twins. D) * Heart of the second twin. E) ** Patent ductus arteriosus. Desc Ao: descending aorta; LPA: left pulmonary artery; PDA: persistence of the ductus arteriosus.