There were 29 patients less than 40 years, 15 nonspecific inflammation (51.7%), 8 lung cancer (27.6%) and 4 pulmonary tuberculosis(13.8%). [Conclusion] Fibrosis bronchoscope is a safe and effective method of diagnostic pulmonary closure.

• 其中40岁以上患者21例，非特异性炎症9例，占42.；9%25，肺癌10例，占47