In Marfan syndrome, the air sacs in the [[lungs]] may be unusually large. In addition, the chest may be abnormally shaped. For these reasons, people with Marfan syndrome may have breathing problems, such as collapsed lungs (spontaneous pneumothorax) and early emphysema. | In Marfan syndrome, the air sacs in the [[lungs]] may be unusually large. In addition, the chest may be abnormally shaped. For these reasons, people with Marfan syndrome may have breathing problems, such as collapsed lungs (spontaneous pneumothorax) and early emphysema. |