简要病史患者男性70岁,因“咳嗽、咯痰两个月,伴气促、消瘦”而入院。2006年4月底无明显诱因下出现咳嗽,以白天为甚,痰白、粘稠,每日7~8口,未治疗。6月5日受凉后突发热、无寒战,体温在37.8℃,但咳嗽加剧,每日咯淡黄色粘痰十余口,活动后感气促,夜间並有盗汗。当地X线胸片示“左 A brief history of patients male 70-year-old, due to “cough, expectoration for two months, with shortness of breath, weight loss,” and admitted to hospital. No obvious incentive at the end of April 2006 cough, even during the day, sputum white, thick, 7 to 8 daily, untreated. June 5 sudden cold after the cold, no chills, body temperature at 37.8 ℃, but the cough increased daily pale yellow sticky sputum more than ten mouth, feeling irritated, night sweats. Local X-ray showed "left