Massive Hemoptysis in Children

Figure 2

CTA demonstrated that BA1 originated from the thoracic aorta to the left at the level of the upper margin of T5 and entered the right hilum above the bifurcation of the trachea. BA2 arose from the right side of the thoracic aorta at T6 and passed up to the right and then down to the right hilum, with a widening of the diameter (2 mm) of the primary and middle tubes.