1　病例介绍1.1　例1,女,47岁,1997年5月开始右胸痛,咳嗽,气急,四肢乏力。于1997年7月来我院就诊,X线胸部摄片及胸部CT扫描示:右上纵隔占位病变,胸腺瘤可能性大。1997年8月手术治疗,术后病理:胸腺瘤(上皮型)。术后行1程放化疗后出院。半年后,患者来院诉胸部及后背部疼痛难忍,胸 1 Case Introduction 1.1 Case 1, female, 47 years old, began right chest pain, cough, shortness of breath, and limb weakness in May 1997. In July 1997, he came to our hospital for examination. X-ray chest radiographs and chest CT scans showed that the right upper mediastinal space-occupying lesions had a high possibility of thymoma. Surgical treatment in August 1997, postoperative pathology: thymoma (epithelial). After the first line of chemotherapy, she was discharged. Six months later, the patient came to the hospital complained of chest and back pain, chest, chest