Figure 1: CTA images in a 6-year-old child with cyanosis. Axial
images showing a) Perimembranous VSD (asterik), b)Pulmonary atresia (arrow) with confluent pulmonary arteries(c) . The right sided aortic arch (asterik) was dilated, causing
side-to-side flattening of the trachea (arrows in d ).e) Coronal maximum intensity projection image showing the
extrinsic compression of bronchus intermedius between the right
descending pulmonary artery (white asterik) and aneurysmal MAPCA (black
asterik). Azygous fissure was present (white arrows). f)Oblique coronal maximum intensity projection image showing the extrinsic
compression of bronchus intermedius by the right descending pulmonary
artery (white asterik) and aneurysmal MAPCA (black asterik) arising from
the descending thoracic aorta (DTA).