患者女,80岁,退休工人。因反复咳嗽、气促3年,伴心悸1月于1995年2月18日入院。3年前患者无明显诱因出现间歇轻咳、无痰,无发热,间中轻度气促,活动后稍加重,休息可缓解。1月前上述症状再发,伴心悸,上腹隐痛就诊,X线胸片示:左下肺后基底段见斑片状模糊影及两个气液平面,各宽约2.5 Female patient, 80 years old, retired worker. Due to repeated cough, shortness of breath 3 years, accompanied by heart palpitations in January 18, 1995 admission. 3 years ago, no obvious incentive for patients with intermittent mild cough, no sputum, no fever, mild shortness of breath during the period, a slight increase after exercise, rest can be alleviated. 1 month ago, the recurrence of symptoms, palpitations, upper abdominal pain treatment, X-ray showed: basal segment of the left lower lung, see the patchy blur and two gas-liquid planes, each 2.5