咯血是由多种疾病引起的一种症状,其中最主要的是呼吸系统疾病,但其他系统以及一些全身性疾病也可能引起咯血。因此,咯血的病因诊断尤为重要。为了提高读者对咯血的诊治水平,特请有经验的专家、医生撰写了有关咯血的专题文章,供临床医生参考。 Hemoptysis is a symptom caused by a variety of diseases, the most important of which are respiratory diseases, but other systems and some systemic diseases may also cause hemoptysis. Therefore, the diagnosis of hemoptysis is particularly important. In order to improve the level of diagnosis and treatment of hemoptysis, specially invited experienced experts and doctors have written articles on hemoptysis for clinicians’ reference.