1病例资料【例1】男,63岁。因胸闷、胸痛、消瘦、干咳2个月入院。1年前因右侧胸痛、干咳,胸部X线检查示右肺下野大片阴影,考虑为肺部感染性疾病,予抗感染治疗效果不佳。3个月后复查胸部X线片示右侧胸腔少量积液,右下肺阴影无明显变化,胸腔积液检查报告为淡黄色渗出液。考虑为结 1 case information [Example 1] male, 63 years old. Due to chest tightness, chest pain, weight loss, dry cough 2 months admission. A year ago due to the right side of the chest pain, dry cough, chest X-ray examination showed a large shadow down the right lung, considered as pulmonary infectious disease, to anti-infection treatment ineffective. Three months after the review of the chest X-ray showed a small amount of fluid on the right chest, right lower shadow no significant change in the shadow, pleural effusion examination report as pale yellow exudate. Consider as knot