Diagnosis

Medical and Family Histories

Your doctor will ask about your medical history and your family's medical history. For example, your doctor may ask whether:

•  You've had heart disease, eye problems, or problems with your spine. These complications are common in people who have Marfan syndrome.
•  You have shortness of breath, palpitations, or chest pain. These are common symptoms of heart or lung problems linked to Marfan syndrome.
•  Any of your family members have Marfan syndrome, have died from heart problems, or have died suddenly.

Physical Exam

During the physical exam, your doctor will look for Marfan syndrome traits. For example, he or she may check the curve of your spine and the shape of your feet. Your doctor also will listen to your heart and lungs with a stethoscope.

Diagnostic Tests

Your doctor may recommend one or more of the following tests to help diagnose Marfan syndrome.

Echocardiography

Echocardiography (EK-o-kar-de-OG-ra-fee), or echo, is a painless test that uses sound waves to create pictures of your heart and blood vessels.

This test shows the size and shape of your heart and the diameter of your aorta or other blood vessels. (The aorta is the main artery that carries oxygen-rich blood to your body.) Echo also shows how well your heart's chambers and valves are working.

For people who have Marfan syndrome, echo mainly is used to check the heart's valves and aorta.

Magnetic Resonance Imaging and Computed Tomography Scans

Magnetic resonance imaging (MRI) is a test that uses radio waves and magnets to create detailed pictures of your organs and tissues. Computed tomography (CT) uses an x-ray machine to take clear, detailed pictures of your organs.

MRI and CT scans are used to check your heart valves and aorta. These scans also are used to check for dural ectasia, a nervous system complication of Marfan syndrome.

Slit-Lamp Exam

For this test, an ophthalmologist (eye specialist) will use a microscope with a light to check your eyes. A slit-lamp exam can find out whether you have a dislocated lens, cataracts, or a detached retina.

Genetic Testing

In general, genetic testing involves blood tests to detect changes in genes. However, because many different genetic changes can cause Marfan syndrome, no single blood test can diagnose the condition.

Ghent Criteria

Because no single test can diagnose Marfan syndrome, doctors use a set of guidelines called Ghent criteria to help diagnose the condition. The Ghent criteria are divided into major criteria and minor criteria. Sometimes genetic testing is part of this evaluation.