患者男,33岁,农民。因右胸背部疼痛,针刺样、不放射、间歇性加重近一年,当地医院摄胸片见右上纵隔包块,于1982年10月18日入院。皮肤、粘膜及全身检查未见异常;心电图、肺功能及各项化验检查亦未见特殊;胸片:后前位(图1):右上纵隔7.5×5厘米包块,边缘锐利、密度均匀一致;侧位(图2): Male patient, 33 years old, farmer. Due to right chest back pain, acupuncture-like, non-radiation, intermittent exacerbation of the past year, the local hospital chest radiographs see the right upper mediastinum mass, was admitted on October 18, 1982. Skin, mucous membrane and the whole body no abnormalities; ECG, pulmonary function and various laboratory tests have not seen any special; chest radiograph: posterior (Figure 1): upper right mediastinum 7.5 × 5 cm mass, sharp edges, uniform density ; Lateral position (Figure 2):