How Can You Tell If Someone Has Marfan Syndrome?

How Can You Tell If Someone Has Marfan Syndrome? Marfan syndrome features may include: Tall and slender build. Disproportionately long arms, legs and fingers. A breastbone that protrudes outward or dips inward. What does a person with Marfan syndrome look like? People with Marfan syndrome are often very tall and thin. Their arms, legs, fingers