咳嗽是呼吸系统疾病的常见临床症状,大多数患者Ｘ线胸片检查有阳性结果,诊断较易明确,少部分患者Ｘ线胸片检查阴性且表现为顽固性咳嗽,诊断不明,常需借助纤维支气管镜(纤支镜)检查才能确诊。本文总结了我院近10年来52例Ｘ线胸片阴性顽固性咳嗽患者的纤支镜检查结果,报告如下。1 Cough is a common clinical symptom of respiratory diseases, most patients have positive results of X-ray examination, the diagnosis easier to clear, a small number of patients with X-ray examination showed negative and showed intractable cough, diagnosis is often required by fiber Bronchoscopy (bronchoscopy) to confirm the diagnosis. This article summarizes the past 10 years in our hospital 52 cases of X-ray negative refractory cough in patients with bronchoscopy results are as follows. 1