[Rare vascular findings in CT of the upper mediastinum].

The CT findings of malformation of major veins near the heart are described (one case of persistent left superior vena cava and two cases of partial anomalous pulmonary veins) as well as one malformation of the pulmonary artery (vascular sling). These findings demonstrate the vascular character of the lesion and the procedure permits detailed clarification of the abnormality.