[Cardiovascular diagnosis in thoracopagus twins]

The case of a thoracopagus with atrial and ventricular connection and of a thoracoischiopagus with atrial connection and multiple cardiac defects are reported. For the assessment of cardiac fusion, ECG, radionuclid-studies and CT are of limited value. By means of angiocardiography it is possible to classify patients in those with pericardial union only, with venae-cavae - or atrial connection and with ventricular connection. While separation of twins with pericardial fusion is often performed, successful separation of twins with atrial fusion is only once described, of twins with ventricular fusion never described.