肺血管病不是具体疾病的诊断术语 ,而是肺循环病变的总称 ,世界卫生组织疾病分类学将其归类于循环系统。虽然肺血管疾病并不少见 ,但因其位于胸腔内 ,检查比较困难 ,对其了解不如体循环多 ,然而 ,近年情况已发生明显变化。肺循环位于左右心之间 ,心肺关系十分密切 ,互为影响 , Pulmonary vascular disease is not a diagnostic term for specific diseases, but a general term for pulmonary disease, which is classified by the World Health Organization’s disease taxonomy in the circulatory system. Although pulmonary vascular disease is not uncommon, but because of its location in the chest, the examination is more difficult to understand better than the systemic circulation, however, in recent years, the situation has changed significantly. Pulmonary circulation is located between the left and right heart, heart and lungs are very closely related to each other,