With the measure of the radius, you can tell a lot about the circle: its diameter (the distance from one side to the other, passing through the center), its circumference (how far around it is), and its area (how many square inches, feet, yards, meters â what have you â fit into it).
Marfan syndrome (also called Marfan's syndrome) is a genetic disorder of connective tissue. It has a variable clinical presentation, ranging from mild to severe systemic disease. The most serious manifestations involve defects of the heart valves and aorta, which may lead to early death if not properly managed.
Marfan syndrome also can damage the heart valves. Marfan syndrome affects approximately 200,000 people in the United States. Causes of Marfan syndrome. Marfan syndrome is caused by a genetic mutation. The disorder is usually inherited, but spontaneous cases occur. Having a parent with Marfan syndrome is the greatest risk factor. Symptoms of Marfan syndrome. Many patients with Marfan syndrome have no symptoms.