Fig. 3

(A and B) The images reveal significant stenosis at the origins of the left and right pulmonary arteries as well as massive pericardial effusion. (C, D, E, F, and G) Selective right pulmonary artery injection shows a significant diffuse stenosis at the origin (C). Pre-dilation of both right and left pulmonary arteries is done by the balloon swallowing technique, and the balloons are advanced further (D). Significant residual stenosis in both branches is delineated after balloon percutaneous angioplasty (E). Stenting of the right pulmonary artery is done, and the central waist of the stenosis is visualized (F). The central waist disappears completely, and the flaring of the proximal edge of the stent is done. Afterward, stenting of the left pulmonary artery is performed. The central waist of the lesion is illustrated (G)