病史摘要患者男,62岁。因干咳1年,气促1月于2007年12月入院。1年前渐起干咳,因疑宅旁修路扬尘所致,未重视,服止咳药无效。当年4月咳嗽加重到当地医院就诊,胸片、胸部CT示双肺弥漫性病变,因症状不重,除对症治疗外,未做进一步诊治。至11月患者活动后明显感觉吃力,胸部觉紧迫感,并 Summary of patient history Male, 62 years old. One year due to dry cough, shortness of breath in January 2007 in December 2007 admission. Gradually dry cough 1 year ago, due to suspicious homes next to the road due to dust, did not pay attention, cough medicine service invalid. In April that year, cough increased to the local hospital for treatment, chest radiography, chest CT showed diffuse lung disease, due to symptoms is not heavy, except symptomatic treatment, no further diagnosis and treatment. After the patient’s activity to November obviously felt strenuous, chest sense of urgency, and