Tortuous aorta is a pathological condition where the aorta has an irregular shape, usually contorted, and can affect blood flow coming out of the heart and to the body tissues.
The cause can be a congental and/or it can be the result of high blood pressure, or the result of physical changes in the spine and chest wall. It can displace or crowd the space other organs.
A twisted or distorted aorta (thoracic) can cause some blockage of blood flow from the narrowing of the aorta. The result would be the same as valvular (aorta) stenosis. If there is severe blockage, it can result in heart failure. Symptoms would/could be shortness of breath, chest pains, pulmonary and/or perpheral edema, etc. Worst case scenario
Depending on the circumstance it can progress, usually requires surgery.