The evaluation of clinical usefulness of transbrochoscopic lung biopsy in undefined interstitial lung diseases: a retrospective study

Previous studies mostly focused on the diagnostic accuracy of transbronchoscopic lung biopsy (TBLB) in the diagnosis of interstitial lung diseases (ILDs). We aimed to explore the clinical usefulness of TBLB results in the diagnostic procedure of undefined ILDs.The retrospective analysis included patients undergoing TBLB for the diagnosis of undefined ILDs from January 2007 to December 2010. The clinically useful TBLB was defined as that lead to...