TBLB as a Diagnostic Procedure for Sarcoidosis in Japan — A Cooperative Study in Twenty-Four Hospitals

In recent years, the transbronchial lung biopsy (TBLB) has been introduced as a simple and safe method of diagnosing diffuse pulmonary diseases, especially sarcoidosis. several reports have discribed the usefulness of TBLB (ref. 1). To determine its popularization and clinical significance in Japan, the Japan Sarcoidosis Committee carried out a questionnaire investigation.