The Diagnostic Value Of Transbronchial Lung Biopsy(TBLB) Under Digital Subtraction Angiography(DSA) In Peripheral Lung Lesions.

Objective: To estimate the diagnostic value of transbronchial lung biopsy(TBLB) under digital subtraction angiography(DSA) in peripheral lung lesions. Methods: 52 patients with peripheral lung lesions were performed TBLB under DSA,and then performed brochial brushing(BB) and bronchoalveolar lavage(BAL), the positive diagnostic rates of these three methods were compared mutually. Then these three positive diagnostic rates were compared with that of 45 patients with peripheral lung lesions performed by Percutaneous needle aspiration biopsy (PCNA). Results: The positive diagnostic rate of TBLB, BB and BAL was 61.53%, 57.69% and 63.46% respectively, the answer of X~2 is 0.29, 0.07 and 0.53 respectively, all P>0.05, have no significant difference of them. The positive diagnostic rate of these three methods and PCNA (64.44%)have no remarkable difference ,the answer of X~2 is 0.01, 0.22 and 0.01,all P>0.05. If TBLB was combined with BB and BAL, the positive diagnostic rate (82.6%) would higher than anyone of these methods.The constituent ratio of category of lesions have no prominent difference, the answer of X~2 is 3.806, P>0.05. Conclusions: TBLB, BB , BAL and PCNA have the same important diagnostic value in peripheral lung lesions.We should perform BB and BAL after TBLB routinely to elevate the diagnostic value.