<unk>  <unk>  is a heart<unk>  disorder. Blood going from the heart to the lungs goes through the pulmonary<unk> , whose purpose is to prevent blood from flowing back to the heart. In<unk>  this opening is too narrow, leading to a reduction of flow of blood to the lungs. While the most common cause of<unk>  is congenital heart disease, it may also be due to a malignant carcinoid tumor. Both stenosis of the pulmonary artery and<unk>  are forms of pulmonic stenosis (nonvalvular and<unk> lar, respectively) but<unk>  accounts for 80% of pulmonic stenosis.<unk>  was the key finding that led Jacqueline Noonan to identify the syndrome now called Noonan syndrome.
Pulmonary valve stenosis
Pulmonary vein stenosis
Tricuspid valve stenosis
Pulmonic stenosis
Supravalvular aortic stenosis
Double inlet left ventricle
Mitral stenosis
Accessory auricle