PMC8157476_01
Preoperative chest radiograph of a 73-year-old man with tracheomalacia, showing an intrathoracic narrowing of his trachea.
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A preoperative chest radiograph revealed an intrathoracic narrowing of his trachea (Fig. 1), and a lateral narrowing of the tracheal shape was found on chest CT imaging (Fig. 2).
Preoperative flow-volume curve of the respiratory function of a 73-year-old man with tracheomalacia.
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A low maximal forced expiratory flow of 23.1% was detected, although a biphasic morphology, notched expiratory loop, or expiratory oscillation was not shown in the flow-volume curve (Fig. 3).