ABSTRACT
Objective To study the application value of cytological examination and biopsy for the transbronchial needle aspiration (TBNA) in the diagnosis of cancer. Methods 101 patients with lung disease by CT that need TBNA examination to make final diagnosis were selected. They were executed with routine ex-amination of TBNA. And then pathologic biopsy and cytological examination were applied on the collection sam-pies. Results 86 patients among the 96 subjects were finally diagnosed by TBNA. So the ratio of final diagno-sis was 94. 5%. And the positive ratios about transbronchial needle aspiration and ring clamp biopsy, also brush biopsy, were 71.4% 、75.8%、 61.5%. Only 5 patients were histodiagnosed by just transbrenchial needle aspiration. Conclusion TBNA plays an important role on the diagnosis of lung tumor with different types. And the combination of three methods can improve the diagnosis pro-gressively.