1　临床资料例 1,张× ,女 ,4 9岁 ,于 1年前因先后两眼睑下垂 ,早上轻、午后重 ,经检查和新斯的明试验 (+ )而诊断为眼肌型重症肌无力 (ＭＧ) ,经用药治疗 ,症状有好转。继而出现吞咽困难 ,呛咳和上肢无力 ,经纵膈ＭＲ检查示胸腺瘤 ,确诊为全身型ＭＧ伴胸腺瘤。而投用强的松和 1 clinical data Example 1, Zhang ×, female, 49 years old, a year ago because of the two ptosis, morning light, heavy afternoon, after examination and neostigmine test (+) diagnosis of oculomotion myasthenia gravis Weakness (MG), the medication, the symptoms have improved. Followed by dysphagia, cough and upper limb weakness, the mediastinal MR examination showed thymoma, diagnosed with systemic MG with thymoma. And cast strong pine and