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. 2020 Jun 23;7:278. doi: 10.3389/fmed.2020.00278

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Copyright © 2020 Li, Zhao, Lu, Tang, Liang and Hou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The repeated three-dimensional computed tomography (3D-CT) of the trachea and the spirometry at 16-month follow-up. (A) There was partial absence at the right side of the trachea on the 3D-CT on admission (Red arrow pointed to the fistula). (B) The repeated CT at 16-month follow-up showed that the fistula was covered by the flap grafting (Red arrow). (C) The spirometry at 16-month follow-up showed that the ventilatory function was normal. (D) The flow-volume loop showed that no fixed or dynamic airway obstruction existed. Good patency and stableness of large airway was maintained after the treatment.