【病例】　男 ,2 4岁。因午后低热、干咳、胸闷、气促伴夜间盗汗 1周入院 ,病程中无咯血、胸痛。查体 :体温 37℃ ,脉搏 90 /m in,呼吸 2 0 /m in,血压 135 /6 8mm Hg。颈静脉充盈 ,气管左移 ,右肺叩诊浊音 ,呼吸音明显减弱 ,左肺呼吸音清 ,心率 90 /m in,律齐 ,心界左移 ,心音 Case: Male, 24 years old. Due to low fever in the afternoon, dry cough, chest tightness, shortness of breath, night sweats, admission to hospital for 1 week, no hemoptysis and chest pain during the course of the disease. Physical examination: body temperature 37°C, pulse 90/min, respiratory 2 0 /min, blood pressure 135/6 8 mm Hg. The jugular veins are filled, the trachea is shifted to the left, and the right lung is diagnosed as dullness. The breath sounds are significantly weakened. The left lung breath sounds are clear. The heart rate is 90/m in, the law is equal, the heart is shifted to the left, and the heart sounds