“…The references cited in these articles were examined to identify additional reports. We found 35 cases of tracheobronchitis in non-ventilated adults [4,5,32,33,34,35,36,37,38,39,40,41,42,43,44,45]. We excluded 19 of them since the diagnosis was not based on endoscopic findings [34,35,43,44,45].…”