When examining an AP chest film of a 57-year-old man with a systolic ejection-type cardiac murmur, you notice that the arch of the aorta forms a typical aortic knob on the left of the mediastinal...

When examining an AP chest film of a 57-year-old man with a systolic ejection-type cardiac murmur, you notice that the arch of the aorta forms a typical aortic knob on the left of the mediastinal border, but also appears as a bulge on the right upper mediastinal border, suggesting an enlarged ascending aorta. In addition, the left ventricular heart border appears prominent. There is
no
evidence of pulmonary hypertension in your patient. Your order an echocardiogram because you suspect your patient has which of the following?

a. Tetralogy of Fallot

b. Pulmonary valve stenosis

c. Atherosclerosis

d. Aortic valve stenosis

e. Defective tricuspid valve