Marfan Syndrome

Diagnosing Marfan syndrome can be genuinely challenging, since its features overlap with several other related connective tissue disorders, and no single physical sign or test confirms the diagnosis on its own. Physicians typically use an established set of clinical criteria that weigh a combination of specific findings, including the two most characteristic features: significant widening of the aorta near the aortic valve and a dislocated lens in the eye. The evaluation typically includes:

• Thorough physical examination and family history, along with referral to specialists including cardiology, ophthalmology, and sometimes orthopedics
  
  
• Echocardiogram — one of the first tests generally recommended when Marfan syndrome is suspected, since it directly assesses the size and function of the aorta and heart valves
  
  
• Genetic testing — can identify a mutation in the FBN1 gene in most people with Marfan syndrome and can be particularly useful for confirming a diagnosis in ambiguous cases or for testing family members of someone already diagnosed, although a negative genetic test does not entirely rule out the condition given the complexity of interpreting results

There is currently no cure for Marfan syndrome, but a well-coordinated treatment plan can substantially reduce the risk of serious complications and allow most people with the condition to live long, active lives:

• Medications are used to lower blood pressure and reduce the mechanical stress placed on the aortic wall, which has been shown to slow the progression of aortic widening over time
  
  
• Regular, scheduled imaging of the aorta, typically through echocardiography and sometimes more detailed imaging such as MRI, allows the care team to track its size closely and determine the right time for intervention
  
  
• Preventive aortic surgery — when the aorta reaches a size associated with significant risk of tearing, surgery to replace the affected portion of the aorta is generally recommended, performed on a planned, elective basis rather than as an emergency, which carries a much lower risk than surgery performed during an actual aortic emergency
  
  
• Heart valve repair or replacement — when significant, heart valve problems may also require surgical repair or replacement, sometimes performed at the same time as aortic surgery