Pulmonary Artery Stenosis is a heart condition characterized by a narrowing of the pulmonary artery, which carries blood from the heart to the lungs. This narrowing can restrict blood flow, making it harder for the heart to pump blood effectively. It can be present at birth (congenital) or develop later in life. Symptoms may include shortness of breath, fatigue, and chest pain, especially during physical activity. Diagnosis typically involves imaging tests like echocardiograms or MRI. Treatment options may include medication, balloon angioplasty, or surgery to widen the narrowed area and improve blood flow.