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initial placement of the DLT, we introduce a bronchoscope inside the tracheal lumen of the DLT after passing the vocal cords. After the confirmation of right-sided placement of the endobronchial lumen as above, the bronchoscope is passed down the bronchial lumen. The examination or the manipulation is performed to avoid obstruction of the right upper lobe. This method may be somewhat time- consuming. Occasionally, as an alternative method, we also use the technique that was described by Bussières et al. in the placement of the RDLT with the bronchoscope in the bronchial lumen after passing the vocal cords. We appreciate their kind comments and valuable contributions to our paper