中颅凹软骨瘤一例赵钢，杨星男性，１８岁。８月前发生右上睑下垂，１月后出现视力下降，眼球运动受限，流泪。入院前发生阵发性头痛伴呕吐。查体：右上睑下垂，右眼球除能略外展运动外，余各方向运动受限。右眼视力０．３，左眼视力１．２，右三叉神经眼支、上颌支分布区... One case of mesenchyme chondroma: Zhao Gang, Yang Xing Male, 18 years old. The sagging of the right upper eyelid occurred 8 months ago, and the visual acuity dropped after 1 month. Eye movements were limited and tears occurred. There was paroxysmal headache with vomiting before admission. Physical examination: The right upper eyelid droops, except for the right eyeball, except for a little abduction movement, more movement is limited in all directions. Right eye vision 0.3, left eye vision 1.2, right trigeminal nerve occlusion, maxillary branch distribution area...