ObjectiveTo summarize the experience of percutaneous pulmonary biopsy applied to the diagnosis of pulmonary malignancy, then to explore its clinical value and analyze the related factors influencing the diagnostic accuracy for pathological types. MethodsTotally 71 patients definitely diagnosed as pulmonary malignancy were selected. All patients received percutaneous pulmonary biopsy. The diagnostic accuracy for the pathological type was assessed, the factors influencing the diagnostic results were summarized, and the causes of false-negative diagnostic results were analyzed. ResultsThe positive rate of percutaneous pulmonary biopsy for diagnosing malignant lung tumor was 92.96%.The rate of missed diagnosis was the highest (80.00%) when the diameter of tumor was 3-5cm. Diagnostic accuracy did not correlate to the depth of the lesion, the occurrence of necrosis or infection (P＞0.05). ConclusionPulmonary biopsy is effective for diagnosing pulmonary malignancy, achieves a high positive rate for diagnosis, and can provide effective reference for further therapy. However, the relevant influencing factors should be taken into account, and other auxiliary approaches can be chosen for definite diagnosis if necessary.

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