Atherosclerosis of the aorta means plaque has formed inside your body's largest artery
Your aorta is the main artery that carries blood from your heart to the rest of your body. When atherosclerosis develops there, fatty deposits called plaque build up on the inner walls of the aorta. Over time, this narrows the vessel and can reduce blood flow to your organs and limbs. The aorta runs from your heart down through your chest and abdomen, so plaque can form in different sections — the thoracic aorta (in your chest) or the abdominal aorta (in your belly).
Atherosclerosis of the aorta is serious because the aorta is your body's main highway for blood. When it becomes narrowed or damaged, your heart has to work harder to pump blood through, and organs downstream may not get enough oxygen. In some cases, the weakened aortic wall can bulge outward, forming an aneurysm — a condition that requires close monitoring or surgery.
Key Takeaways
- Atherosclerosis of the aorta occurs when plaque builds up inside your largest artery, narrowing it and reducing blood flow to your organs and limbs.
- The condition can develop in your chest (thoracic aorta) or belly (abdominal aorta), and symptoms depend on which section is affected and how narrow it has become.
- Doctors diagnose aortic atherosclerosis using imaging tests like ultrasound, CT scans, or angiography, which show the plaque and any narrowing.
- Treatment focuses on slowing plaque growth through medication, lifestyle changes, and managing risk factors like high blood pressure, high cholesterol, and smoking.
- Regular monitoring and follow-up imaging are essential because the condition can worsen over time or lead to complications like aneurysm or blood clots.
How atherosclerosis develops in the aorta
Atherosclerosis begins when the inner lining of your aorta becomes damaged. This damage can happen from high blood pressure, high cholesterol, smoking, diabetes, or inflammation. Once the lining is injured, cholesterol and other substances start to accumulate at that spot, forming a deposit called plaque.
As plaque builds up over months and years, it hardens and thickens. The aortic wall may also become stiff and lose its normal flexibility. This process is gradual — most people do not notice symptoms until the narrowing becomes severe enough to restrict blood flow significantly. In some cases, the plaque can rupture, triggering a blood clot that blocks the vessel suddenly.
Symptoms you might experience
Many people with atherosclerosis of the aorta have no symptoms at all, especially in the early stages. The condition is often discovered by accident during imaging tests done for other reasons. However, as the narrowing worsens, symptoms depend on which part of the aorta is affected.
If plaque narrows the thoracic aorta (in your chest), you may feel chest pain or pressure, shortness of breath, or pain in your upper back. If the abdominal aorta is affected, you might experience pain in your belly, lower back, or legs. Some people notice their legs feel weak, numb, or cold — a sign that blood flow to the limbs is reduced. Severe narrowing can cause pain even at rest or during light activity.
How doctors identify aortic atherosclerosis
Your doctor will start by asking about your symptoms, family history, and risk factors like smoking or high cholesterol. They will listen to your heart and blood vessels with a stethoscope to check for unusual sounds. If they suspect aortic atherosclerosis, they will order imaging tests to see inside your aorta.
The most common tests are ultrasound, CT angiography (a detailed X-ray with contrast dye), or MRI angiography. These show the size and shape of your aorta, where plaque is located, and how much narrowing has occurred. In some cases, your doctor may perform a catheter angiogram — a procedure where a thin tube is threaded through an artery to inject dye and take pictures directly. Blood tests can also measure cholesterol and other markers of heart disease risk.
Treatment options and what to expect
Treatment for aortic atherosclerosis focuses on slowing plaque growth, preventing complications, and managing your risk factors. Your doctor will likely prescribe medications such as statins (to lower cholesterol), blood pressure medications, and antiplatelet drugs like aspirin to reduce clot risk. These medications work best when combined with lifestyle changes.
Lifestyle changes are a core part of treatment. You will be advised to quit smoking if you smoke, eat a heart-healthy diet low in saturated fat, exercise regularly as tolerated, and maintain a healthy weight. Managing other conditions like diabetes and high blood pressure is equally important. If narrowing becomes severe and restricts blood flow significantly, your doctor may recommend a procedure to open the vessel — either an angioplasty (using a balloon to widen the artery) or a stent (a small mesh tube inserted to keep the artery open).
Monitoring and follow-up care
Once atherosclerosis of the aorta is diagnosed, you will need regular follow-up appointments and imaging tests to track whether the condition is stable or worsening. How often you are monitored depends on the severity of narrowing and your symptoms. Some people have imaging every 6 to 12 months; others may go longer between tests.
During follow-up visits, your doctor will check your blood pressure, review your medications, and ask about any new symptoms. They may repeat ultrasound or CT scans to measure changes in plaque size or aortic diameter. If an aneurysm develops — a bulging of the weakened aortic wall — your doctor will watch it closely and may recommend surgery if it reaches a certain size or grows rapidly. The goal is to catch complications early before they become life-threatening.
Complications that can develop
The main complications of aortic atherosclerosis are aortic aneurysm, blood clots, and aortic dissection. An aneurysm occurs when the weakened aortic wall bulges outward like a balloon. If it ruptures, it can cause life-threatening bleeding. A blood clot may form on the plaque surface and suddenly block blood flow, causing a stroke or loss of blood supply to your legs. Aortic dissection — a tear in the aortic wall — is a medical emergency requiring immediate surgery.
These complications are why regular monitoring matters. Catching an aneurysm before it ruptures, or detecting a clot before it travels, can save your life. If you develop sudden severe chest pain, back pain, leg pain, or shortness of breath, seek emergency care immediately.
Frequently Asked Questions
Can atherosclerosis of the aorta go away on its own?
No, plaque does not disappear once it forms. However, medication and lifestyle changes can slow its growth and prevent it from worsening. In some cases, plaque may stabilize and cause no further problems if you manage your risk factors well.
Is aortic atherosclerosis the same as an aortic aneurysm?
They are related but different. Atherosclerosis is plaque buildup that narrows the aorta. An aneurysm is a bulging or weakening of the aortic wall, which can develop as a result of atherosclerosis but is not the same thing. You can have atherosclerosis without an aneurysm, or an aneurysm without significant atherosclerosis.
What is my risk of having a heart attack or stroke if I have aortic atherosclerosis?
Your risk depends on how severe the narrowing is, where it is located, and how well you manage your risk factors. Aortic atherosclerosis increases your overall cardiovascular risk, but taking medications as prescribed and making lifestyle changes significantly reduce the chance of a major event.
Do I need surgery if I have atherosclerosis of the aorta?
Not necessarily. Many people manage the condition with medication and lifestyle changes alone. Surgery or a procedure to open the artery is usually recommended only if narrowing is severe, symptoms are limiting, or complications like aneurysm develop. Your doctor will discuss whether intervention is needed based on your specific situation.
How often should I have imaging tests to monitor my aorta?
The frequency depends on how much narrowing is present and whether it is stable or changing. Your doctor will recommend a schedule — often every 6 to 12 months initially, then less frequently if the condition remains stable. Always follow your doctor's recommendation for follow-up timing.