{Reference Type}: Case Reports {Title}: Endotracheal cuff undersizing diagnosed by computed tomography: Case report. {Author}: Wu HL;Zhang YM;Shi JH;Ji PP;Shen WQ; {Journal}: Clin Case Rep {Volume}: 9 {Issue}: 12 {Year}: Dec 2021 暂无{DOI}: 10.1002/ccr3.5193 {Abstract}: We herein report a case in which the trachea could be completely sealed only when the cuff pressure reached 100 cmH2O. An excessive cross-sectional area of the trachea is a rare phenomenon, but we believe that our case will be helpful for clinicians who encounter similar situations.