A bulging pulmonary artery segment represents increased pressure in the pulmonary artery, and the ECG usually shows a right deviation and an enlargement of the right ventricle. This condition is usually considered for pulmonary disease, congenital heart disease, or rheumatic heart disease. If the bulge in the pulmonary artery segment is mild, the patient may have no symptoms. If the bulge is significant, the patient may also have symptoms such as prolonged cough, chest tightness, panic attacks, and cyanosis of the lips after exercise. The bulging of the pulmonary artery segment itself is a sign of pulmonary congestion and can also indicate some disease. Therefore, the presence of this state in the examination should be screened for lung disease or heart disease, and further diagnosis or treatment should be made based on the results of the examination.