患者男 ,34岁。胸闷 ,活动后加重 ,伴咳嗽 ,咯痰 2个月。Ｘ线胸片及上消化道钡餐均示后上纵隔占位病变。胸部正侧位 :两肺纹理多 ,于上纵隔、气管分叉之上可见一不规则阴影 ,大部分偏左。左侧位观 ,该阴影位于后纵隔 ,向前压迫气管 (图 1)。诊断 :后上纵隔占位病变。ＣＴ平扫表 Patient male, 34 years old. Chest tightness, increased activity, with cough, expectoration for 2 months. X-ray and upper gastrointestinal barium meal showed after the upper mediastinum lesions. Chest is lateral: two lungs and more, in the mediastinum, tracheal bifurcation can be seen above an irregular shadow, most of the left. The left side of the concept, the shadow in the posterior mediastinum, forward pressure on the trachea (Figure 1). Diagnosis: Posterior mediastinal lesions. CT plain scan table