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痰菌阴性肺结核临床上常易误诊或漏诊，仅靠Ｘ线胸片等常规检查和临床症状往往不易作出正确诊断，而纤维支气管镜对这类患者却有独到之处；但是由于统计方法不同，确诊率相差很大。该文对３９６例痰结核菌阴性、临床拟诊肺结核的患者做了纤支镜检查，确诊结核１２６例，然后进行１年以上随访，发现漏诊结核７８例，纤支镜对肺结核的确诊率为６１．８％。造成纤支镜漏诊的原因可能与它的局限性和炎症所造成的局部支气管粘连、狭窄有关，少数患者可能是由于检查前不规则的抗痹治疗以及未能同时作结核菌培养。
Sputum negative pulmonary tuberculosis clinically often misdiagnosed or missed diagnosis, X-ray alone and other routine tests and clinical symptoms are often not easy to make the correct diagnosis, and fiberoptic bronchoscopy is unique to these patients; but due to different statistical methods, The diagnosis rate varies greatly. In this paper, 396 cases of sputum negative for tuberculosis, clinically diagnosed pulmonary tuberculosis patients underwent bronchoscopy, diagnosed 126 cases of tuberculosis, and then for more than 1 year follow-up found that misdiagnosis of 78 cases of tuberculosis, bronchoscopy for tuberculosis confirmed rate 61.8%. Causes of missed diagnosis of bronchoscopy may be its limitations and inflammation caused by local bronchial adhesions, stenosis, a small number of patients may be due to irregular preoperative anti-paralysis therapy and the failure of simultaneous tuberculosis culture.