1. Wooten C, Patel S, Cassidy L, et al. Variations of the tracheobronchial tree: anatomical and clinical significance. Clin Anat. 2014;27:1223−33.

2. Friedlander DA, Panigrahi R, Palaniappan D. Tracheal bronchus with difficult lung isolation: a case report. Semin Cardiothorac Vasc Anesth. 2022;26:237−40.

3. Jain P, Nguyen DM, Fermin L, Maratea E, Fabbro M. Tracheal bronchus: anesthetic implications and importance of early recognition in the context of bronchial blocker use for lung isolation. J Cardiothorac Vasc Anesth. 2020;34:1019−22.