1病例男性32岁。因外伤后X线检查发现纵隔肿块来诊，患者平素无不适症状。人院体查：血压16／10kPa，脉搏80次／nun，呼吸16次／whn，体温37℃。一般状况可，发育良好，营养中等，头而部无肿胀，颈静脉无怒张，双侧上肢未见明显的肿胀或静脉瘀血，感觉运动功能无障碍，轻度桶状 1 case of male 32 years old. Due to post-traumatic X-ray findings of mediastinal masses, the patient usually had no symptoms. People’s physical examination: blood pressure 16/10kPa, pulse 80 times / nun, breathing 16 times / whn, body temperature 37 °C. General condition, well developed, moderate nutrition, no swelling in head and neck, no engorgement in jugular vein, no obvious swelling or venous congestion in both upper limbs, no movement barrier, mild barrel