病例:男,38岁。1991年9月出现颈部无力,抬不起头,被动抬起头又后仰,同时视物成双,吞咽困难,语音低沉,饮水呛咳,咀嚼无力,在当地医院诊为“颈椎脱位”,给予颈椎牵引及营养神经药物治疗40余天,上述症状加重,并出现眼睑下垂,说话无力,张口困难。于1992年2月来本院就诊,X线胸片发现胸腺瘤,予以切 Case: Male, 38 years old. September 1991 neck weakness, can not lift the head, passive looked up and back, at the same time depending on the material in pairs, swallowing difficulties, voice low, cough, drinking water cough, at the local hospital diagnosed as “cervical dislocation” to give Cervical traction and nutritional nerve drug treatment for more than 40 days, the above symptoms aggravated, and ptosis, weakness, mouth opening difficulties. In February 1992 to our hospital, chest X-ray found thymoma, to be cut