患者 男,46岁。因乏力、盗汗3个月,咳喘50天,发热1周入院。入院前3个月无诱因出现乏力、盗汗、纳差、恶心、嗜睡,无发热。入院前50天受凉后咳喘,咯大量白粘痰。于入院前1周发热,最高达40℃,日温差1～2℃伴寒颤。自发病后体重下降7.5kg。患者有慢性咳喘10年,从事翻砂工作10年,防护不严。查体: Male patient, 46 years old. Due to fatigue, night sweats for 3 months, cough for 50 days, and fever for 1 week. Three months before admission, there was no incentive for fatigue, night sweats, anorexia, nausea, drowsiness, and fever. 50 days before admission, he had cough and asthma after getting cold, and there was a lot of white sticky sputum. One week before admission, fever, up to 40 °C, day temperature difference of 1-2 °C with chills. Since the onset of weight loss 7.5kg. The patient had chronic cough for 10 years and engaged in sanding work for 10 years with poor protection. Physical examination: