最新的研究成果，本论文的主要观点为摘要 特发性间质性肺炎(idiopathic interstitial pneumonia，IIP)是一组病因不明的间质性肺疾病，其首发症状通常表现为活动后呼吸困难及干咳。近期一位患者因反复咯血入院，经胸部CT及肺泡灌洗液等方式最后确诊为IIP，提示咯血也可能是IIP患者的首发表现之一。 Abstract Idiopathic interstitial pneumonia(IIP) is a group of interstitial pulmonary diseases of unknown etiology。Dyspnea and dry cough after activity are the initial symptoms of IIP。 Recently，one patient was hospitalized due to repeated hemoptysis and eventually diagnosed as IIP by CT Scan-Chest and bronchoalveolar lavage fluid。 It indicates that hemoptysis may also be the initial symptoms of IIP。不知是否符合录用要求，望您批评与指正。