Type A is more common and dangerous. It involves a tear in the part of the aorta where it exits the heart. The tear may also occur in the upper aorta (ascending aorta), which may extend into the ...

While pain of an ascending aortic dissection frequently is in the center of the chest radiating to the mid upper-thoracic area, the pain from descending dissection is usually localized to the back ...

In each case the obstructing lesion was localized and situated proximally at the aortic arch. Symptoms were present only in the affected upper extremity and sometimes were out of proportion to the ...