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\nYour doctor will diagnose Marfan syndrome based on your medical and family history, a physical exam, and test results. No single test can diagnose Marfan syndrome, so doctors use a set of guidelines called the Ghent criteria to help. The Ghent criteria include whether the diameter of your aorta is larger than normal, whether your eye lens has ever moved out of place, whether you have certain physical signs of Marfan syndrome, and sometimes genetic testing.
\nIf you are diagnosed with Marfan syndrome, all of your first-degree relatives, including parents, siblings, and children, should be screened for the disorder, even if they do not have signs and symptoms.
\nYour doctor will ask about signs and symptoms, your medical history, and your family\u2019s medical history. For example, your doctor may ask whether any of your family members have Marfan syndrome, have had an aortic aneurysm, or have had heart problems.
\nDuring the physical exam, your doctor will look for signs of Marfan syndrome. For example, he or she may check the curve of your spine and the shape of your feet.
\nYour doctor may recommend one or more of the following tests to help diagnose Marfan syndrome:
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