纵隔异位胸腺瘤少见,1978～1990年我们曾收治3例均误诊,报告如下:例1,男,50岁.因咳嗽、胸闷半年,痰中带血半月入院.查体:一般情况好,全身浅表淋巴结无肿大,气管居中,左肺上叶呼吸音低,无罗音.心脏无异常,肝脾不大.血常规WBC、13.6×10~9/L、N、78％.胸片所见:左肺门处约4×3cm球形阴影,边界欠清,与纵隔成锐角.左肺纹理粗乱,左上叶密度偏高.拟诊左肺中心型肺癌,并左上叶阻塞性肺不张.于1978年3月15日,全麻下行左胸后外切口经第6肋床进胸,无胸水,左肺膨胀好,未扪及肿物,左肺门前约6×5 The septal ectopic thymoma is rare. From 1978 to 1990, we treated 3 cases that were all misdiagnosed. The report is as follows: Case 1, male, 50 years old. Because of cough, chest tightness for six months, Suizhong blood was admitted to the hospital for half a month. Physical examination: Generally good, Superficial superficial lymph nodes without enlargement, central trachea, low breath sounds in the left upper lobe, no rales, no abnormal heart, and less spleen. Blood routine WBC, 13.6×10~9/L, N, 78%. Seen from the film: The left hilum was about 4 x 3cm spherical shadow, the boundary is less clear, and acute angle with the mediastinum. The left lung texture is rough and the left upper leaf density is high. The diagnosis of left lung center type lung cancer and left upper lobe obstructive lung Arrhythmia. On March 15, 1978, under general anesthesia, the left chest and the outer incision were inserted into the chest through the 6th ribbed bed. There was no pleural effusion, and the left lung was inflated. There was no fistula and tumor. About 6×5 in front of the left hilum.