Pulmonary system


Several patients have died from pulmonary complications including pulmonary emboli, pulmonary hypertension, and lung disease. Lung abnormalities identified by autopsy include diffuse thickening (hyperplasia) of the airway (bronchial) smooth muscles, enlargement (emphysematous changes) of the gas exchange regions (alveoli), and diffuse hyperplasia of the pulmonary artery smooth muscles. The last finding could account for the pulmonary hypertension observed in some patients.

- National Organization for Rare Disorders