Complications

Heart and Blood Vessel Complications
The most serious complications of Marfan syndrome involve the heart and blood vessels.Marfan syndrome can affect the aorta, the main blood vessel that supplies oxygen-rich blood to the body. In Marfan syndrome, the aorta can stretch and grow weak. This condition is called aortic dilation or aortic aneurysm.

Eye Complications
Marfan syndrome can cause many eye problems. A common problem in Marfan syndrome is a dislocated lens in one or both of the eyes. In this condition, the lens (the part of the eye that helps focus light) shifts up, down, or to the side. This can affect your eyesight. A dislocated lens often is the first sign that someone has Marfan syndrome.

Nervous System Complications
Fluid surrounds your brain and spinal cord. A substance called dura covers the fluid. In Marfan syndrome, the dura can stretch and grow weak.

Lung Complications
Marfan syndrome can cause sudden pneumothorax (noo-mo-THOR-aks), or collapsed lung. In this condition, air or gas builds up in the space between the lungs and chest wall. If enough air or gas builds up, a lung can collapse.