霍纳综合征是一种由眼交感神经传出通路中任意部分中断所造成的临床综合征，常以上睑下垂、瞳孔缩小等眼部特征为主要临床表现，往往提示头、颈或胸部严重疾病或术后并发症的发生。现报告1例49岁的男性患者，曾在武汉市中心医院耳鼻喉科行右侧咽旁间隙肿物切除术，术后第1天出现右眼上睑下垂，瞳孔缩小，伴同侧面部无汗。术后随访半年，上述症状未见明显改善。右侧咽旁间隙肿物的病理结果证实为交感干神经鞘瘤，该病例临床较为罕见。

Horner syndrome is caused by damage of the oculosympathetic pathway. It is a common disorder characterized by ocular signs such as ptosis and miosis, and these signs usually indicate the occurrence of severe head, neck and chest diseases or surgical complications. We report a case of 49-year-old male patient who underwent parapharyngeal space tumor resection in the Department of otolaryngology. On postoperative day one, the patient presented right eyelid drooping, the right pupil constricted, and the absence of sweating on the right side of the face.  After six months of follow-up, the above signs still presented and showed no significant change. T??he pathological assessment of the resected parapharyngeal space tumor demonstrated that it is the sympathetic trunk schwannoma, which is relatively rare in clinical practice.