The area of coarctation is visible here as a segmental narrowing of the aorta (arrow). Such lesions typically present later in life than do preductal coarctations. Note the dilated ascending aorta and major branch vessels proximal to the coarctation. A large amount of blood reaches the lower extremities via dilated, tortuous collateral channels.
Coarctation of the aorta: postductal type
Coarctation of aorta postductal form
This portion of aorta was resected from a patient with a coarctation. The aorta narrows postductally here to about a 3 mm opening.The aorta is opened longitudinally here to reveal a coarctation.