Case Report
Copyright ©The Author(s) 2022.
World J Clin Cases. Jul 6, 2022; 10(19): 6563-6570
Published online Jul 6, 2022. doi: 10.12998/wjcc.v10.i19.6563
Figure 1
Figure 1 Respiratory function tests. A: December, 2018; B: May, 2020. Compared with previous measurements, the expiratory flow was impaired and exhibited a platform-like change, suggestive of variable intrathoracic (upper airway) obstruction.