Aortic aneurysm: understanding and exploring your options
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Medically reviewed by
Dr. David Bensoussan
Updated on
August 6, 2026
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Have you been offered surgery?
Have you been offered surgery?
Surgery is never trivial. A medical specialist will analyze your file to confirm the recommendation or explore other therapeutic options.
Is there an alternative to surgery?
Is there an alternative to surgery?
A surgeon specializing in your condition will re-evaluate your file to confirm if surgery is necessary or to identify less invasive solutions.
Have you been presented with several treatment options?
Have you been presented with several treatment options?
Have you been presented with several treatment options?
An expert physician will analyze your medical records and history to help you choose the most appropriate strategy for your situation, whether it be medical treatment, surgery, or monitoring.
Torn between two treatments?
Torn between two treatments?
A specialist will explain exactly what each option entails, including effectiveness, side effects, and daily impact, so you can make your decision with confidence.
Still unsure about your diagnosis?
Still unsure about your diagnosis?
Still unsure about your diagnosis?
A specialist doctor will analyze your complete file (tests, imaging, medical history) to provide you with a reasoned diagnosis and guide your care.
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Have you just received a diagnosis?
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When facing cancer or a serious illness, every decision counts.
When facing cancer or a serious illness, every decision counts.
A doctor at an expert center will review your file to confirm your care plan, clarify the available options, and help you make decisions with confidence.
Have you received a diagnosis or been offered a treatment plan?
Have you received a diagnosis or been offered a treatment plan?
Have you received a diagnosis or been offered a treatment plan?
Submit your file in just a few minutes and get an expert opinion in under 7 days.
Have you received a diagnosis or been offered a treatment plan?
Submit your file in just a few minutes and get an expert opinion in under 7 days.
What is a medical second opinion?
What is a medical second opinion?
Following a diagnosis or a proposed treatment plan, a medical specialist can analyze your file and provide an additional perspective.
Your health insurance may cover your second opinion.
Your health insurance may cover your second opinion.
Many partner health insurance providers cover the Diagdoor service with no upfront costs. Check your eligibility as soon as you create your account.
Are you looking for a second opinion for a loved one?
Are you looking for a second opinion for a loved one?
The process is entirely online. Upload your available medical documents, and our team will take care of the rest.
How does a second opinion work on Diagdoor?
How does a second opinion work on Diagdoor?
Upload your medical documents online; our team will review your file within 48 hours, and an expert will provide their opinion in less than 7 days. Simple, secure, 100% online.
Not sure if your case is eligible?
Not sure if your case is eligible?
Our medical team can guide you before you submit your request. Describe your situation, and we will help you determine if Diagdoor can be of assistance.
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Need the opinion of a
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Upload your file to Diagdoor. A
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An aortic aneurysm is most often discovered by chance during an examination performed for an entirely different reason. This moment raises legitimate questions about the seriousness of the situation and the decisions that need to be made. The answers depend on several specific criteria and deserve medical guidance tailored to your personal situation.
Key points
- An aortic aneurysm is an abnormal, localized dilation of the wall of the body's main artery; in the vast majority of cases, it causes no symptoms and is discovered incidentally.
- There are two main locations: abdominal aortic aneurysm (AAA), which is by far the most common, and thoracic aortic aneurysm (TAA). For the latter, a distinction is also made between the ascending aorta (near the heart) and the descending aorta (further from the heart), both of which require specific management.
- The decision to operate or monitor depends primarily on the diameter of the aneurysm, its growth rate, and the patient's clinical profile.
- A second opinion from a specialized surgeon can provide additional insight before committing to a surgical decision, or to ensure that the monitoring strategy is well-calibrated.
Aortic dilation: mechanism and main forms
The aorta is the main artery of the human body. It starts at the heart and runs through the chest and abdomen to supply blood to the organs and lower limbs. An aneurysm forms when the wall of this artery weakens and gradually dilates until it exceeds 50% of the vessel's normal diameter. This dilation is most often fusiform (widened along the entire circumference) or, more rarely, saccular (pouch-shaped).
Almost all cases are concentrated in two locations:
- Abdominal aortic aneurysm (AAA) : it develops in the lower part of the aorta, below the renal arteries. This is the most common form, primarily affecting men over 65.
- Thoracic aortic aneurysm (TAA) : it involves the portion of the aorta that runs through the chest. It can affect the ascending aorta (near the aortic valve), the arch, or the descending aorta, and sometimes has genetic causes (Marfan syndrome, bicuspid aortic valve).
The main risk factors for AAA are smoking, being male, being over 65, high blood pressure, and a family history of aneurysms. For TAA, genetic connective tissue diseases play a specific role, particularly in younger patients.
5 to 8%
of men over 65 with an abdominal aortic aneurysm
1/13
is the male-to-female ratio for abdominal aortic aneurysms in France
~70 years
average age of patients undergoing surgery for an abdominal aortic aneurysm
A condition that is most often silent
The vast majority of aortic aneurysms cause no symptoms for years. When signs do occur, they most often manifest as abdominal or lower back pain for AAA, and as chest or respiratory discomfort or pain for TAA.
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Tests for detecting and evaluating an aneurysm
Doppler ultrasound is the first-line examination used for screening and monitoring small aneurysms. A CT angiography of the aorta and lower limbs is the gold standard before any surgical decision: it provides precise anatomical measurements essential for planning an intervention. When an aortic aneurysm is detected, it is essential to check for other locations, particularly in the popliteal arteries (behind the knee). The French National Authority for Health (HAS) recommends targeted screening for men over 65 who have smoked. The quality and completeness of the assessment are decisive for making an informed decision.
Monitor or treat: two strategies depending on the size of the aneurysm
For aneurysms with a diameter below the intervention threshold, regular monitoring via imaging is generally adopted. Beyond 50 mm for an AAA, surgery is discussed. Two techniques exist: the placement of an aortic endoprosthesis (minimally invasive approach) and open surgery (graft replacement). The choice between the two depends on anatomical criteria specific to each patient, evaluated based on the imaging assessment.
Why a second opinion before a surgical decision
An aortic aneurysm involves life-altering medical decisions: whether to operate or continue monitoring, choosing between two surgical techniques with very different implications, or interpreting an abnormality detected during a post-treatment check-up. These decisions are based on individual anatomical and clinical criteria that can only be assessed by reviewing the complete file. A second opinion from a specialized vascular surgeon provides an additional perspective on your situation before moving forward.
Frequently Asked Questions
What is an aortic aneurysm?
An aortic aneurysm is an abnormal, localized dilation of the wall of the aorta, the body's main artery. It forms when the wall gradually weakens, most often due to aging, smoking, or high blood pressure.
What is the difference between an abdominal and a thoracic aortic aneurysm?
An abdominal aortic aneurysm develops in the lower part of the aorta, below the renal arteries; this is the most common form. A thoracic aortic aneurysm affects the portion of the aorta that runs through the chest, near the heart or descending toward the diaphragm.
Is an aortic aneurysm always serious?
The severity of an aneurysm depends primarily on its diameter and growth rate, not just on the diagnosis itself. A small, stable aneurysm can be monitored without intervention for many years under regular medical supervision.
How is an aortic aneurysm screened for?
Doppler ultrasound is the gold standard screening test, particularly recommended for men over 65 with a family history or a history of smoking. A CT angiogram is prescribed when precise anatomical measurements are needed before deciding on a treatment plan.
Can you live a normal life with an aortic aneurysm?
Many patients with a stable aneurysm lead normal lives under regular medical supervision. Managing cardiovascular risk factors is part of the follow-up, coordinated by the primary care physician and the specialist.
Need the opinion of a
vascular surgeon
Upload your file to Diagdoor. A
vascular surgeon
specialist
of the aortic aneurysm
analyzes it and provides a reasoned opinion in less than 7 days.
Sources
- Vidal, Aneurysm: definition, types, risk factors, 2024
- Bichat Hospital, APHP (Chirvtt.fr), General information on abdominal aortic aneurysm
- French National Authority for Health (HAS), Abdominal aortic aneurysms in France, 2012
- Lyon University Hospital (HCL), Health sheet: abdominal aortic aneurysm
- Department of Cardiovascular Surgery, AP-HP Pitié-Salpêtrière, Aortic aneurysm
Further Reading
Why get a second opinion?
Understand the situations in which a second opinion can help you confirm a diagnosis or guide your treatment plan.
How does it work?
Understand the situations in which a second opinion can help you confirm a diagnosis or guide your treatment plan.
Did you know?
The absence of symptoms does not mean the absence of risk: certain profiles justify screening even without complaints. Specific warning signs should lead to an immediate medical consultation.
Have you been offered surgery?
Have you been offered surgery?
Surgery is never trivial. A medical specialist will analyze your file to confirm the recommendation or explore other therapeutic options.
Is there an alternative to surgery?
Is there an alternative to surgery?
A surgeon specializing in your condition will re-evaluate your file to confirm if surgery is necessary or to identify less invasive solutions.
Have you been presented with several treatment options?
Have you been presented with several treatment options?
Have you been presented with several treatment options?
An expert physician will analyze your medical records and history to help you choose the most appropriate strategy for your situation, whether it be medical treatment, surgery, or monitoring.
Torn between two treatments?
Torn between two treatments?
A specialist will explain exactly what each option entails, including effectiveness, side effects, and daily impact, so you can make your decision with confidence.
Still unsure about your diagnosis?
Still unsure about your diagnosis?
Still unsure about your diagnosis?
A specialist doctor will analyze your complete file (tests, imaging, medical history) to provide you with a reasoned diagnosis and guide your care.
Have you just received a diagnosis?
Have you just received a diagnosis?
Have you just received a diagnosis?
Have your medical file reviewed by a specialist in your condition. You will receive an additional opinion in less than 7 days, helping you move forward with clarity.
Is your condition rare or complex?
Is your condition rare or complex?
Diagdoor gives you access to a doctor who specializes in your condition to confirm your treatment plan, no matter where you live.
When facing cancer or a serious illness, every decision counts.
When facing cancer or a serious illness, every decision counts.
A doctor at an expert center will review your file to confirm your care plan, clarify the available options, and help you make decisions with confidence.
Have you received a diagnosis or been offered a treatment plan?
Have you received a diagnosis or been offered a treatment plan?
Have you received a diagnosis or been offered a treatment plan?
Submit your file in just a few minutes and get an expert opinion in under 7 days.
Have you received a diagnosis or been offered a treatment plan?
Submit your file in just a few minutes and get an expert opinion in under 7 days.
What is a medical second opinion?
What is a medical second opinion?
Following a diagnosis or a proposed treatment plan, a medical specialist can analyze your file and provide an additional perspective.
Your health insurance may cover your second opinion.
Your health insurance may cover your second opinion.
Many partner health insurance providers cover the Diagdoor service with no upfront costs. Check your eligibility as soon as you create your account.
Are you looking for a second opinion for a loved one?
Are you looking for a second opinion for a loved one?
The process is entirely online. Upload your available medical documents, and our team will take care of the rest.
How does a second opinion work on Diagdoor?
How does a second opinion work on Diagdoor?
Upload your medical documents online; our team will review your file within 48 hours, and an expert will provide their opinion in less than 7 days. Simple, secure, 100% online.
Not sure if your case is eligible?
Not sure if your case is eligible?
Our medical team can guide you before you submit your request. Describe your situation, and we will help you determine if Diagdoor can be of assistance.
Need the opinion of a
vascular surgeon
Need the opinion of a
vascular surgeon
Upload your file to Diagdoor. A
vascular surgeon
specialist
of the aortic aneurysm
analyzes it and provides a reasoned opinion in less than 7 days.
