NF1 and Hypertension: Cardiovascular abnormalities concerned 23% (15/64) of NF1-deleted patients and included hypertension (n = 7), pulmonic stenosis (n = 2), aortic stenosis (n = 1), extra-dural hematoma (n = 1), patent ductus arteriosus (n = 1), septal hypertrophy (n = 1), aberrant vessel in ascending aorta (n = 1), and occlusion of the left internal carotid artery (n = 1).