进修医生　教授 ,请您谈谈肺血管炎 (pulmonaryvas culitis)的概念及其与系统性血管炎之间的关系好吗 ?教授　肺血管炎是指由于肺血管壁发生炎症 (炎性细胞浸润和血管壁坏死 )而引起的一组异质性疾病的统称 ,包含了多种不同性质的疾病。虽然肺血管炎的病因各异 ,发病机制复杂 , Professor of advanced education, please talk about the concept of pulmonary vasculitis and its relationship with systemic vasculitis? Professor Pulmonary Vasculitis is due to inflammation of the pulmonary vascular wall (inflammatory cell infiltration and blood vessels Wall necrosis) caused by a group of heterogeneous diseases collectively, contains a variety of different types of diseases. Although the causes of pulmonary vasculitis vary and the pathogenesis is complex,