UKMLA PLAB AMC USMLE Prometric MCQ

a) Ventricular septal defect
b) Patent ductus arteriosus
c) Coarctation of aorta
d) Supravalvular aortic stenosis
e) Pulmonary valve stenosis

Correct Answer: C

Explanation:

PA chest radiograph demonstrates rib notching/erosion of ribs 5-8 bilaterally (secondary to intercostal collateral development). There is cardiomegaly, figure-three sign in the left upper mediastinum and post-stenotic dilation of the descending aorta