Fig. 1

1 and 2: Selective aortic root angiography showed a right SCA arising from the right coronary sinus and a dilated and tortuous fistula between SCA and RPA, with the LCx and LAD arising separately from the common trunk, and, the blood flow of RPA was supplied by right SCA (A-P and lateral position). 3: Selective RV angiography showed the dilated MPA was connected with LPA and interrupted with RPA. 4: Selective aortic root angiography showed a vertical PDA between aortic arch and LPA