A 28 year old man with complains of headache and nose bleeds also has pain in the lower limbs on exertion. Exam: radio-femoral delay, cold legs with weak pulse and mild systolic murmur with normal S1S2. What is the most probable diagnosis?

The key is E. CoA (coarctation of aorta). [headache and nosebleeds - >hypertension, pain in lower

limb on exertion -> as reduced blood supply to leg due to coarctation, radio-femoral delay, cold legs

with week pulse, mid-systolic murmur are all features of coarctation of aorta].