case_images: PMC11270345_01
case_images: Flattening in both inspiratory and expiratory flow volume curves in pulmonary function test.
case_images: allergologieselect-8-233-01.jpg
case_images: PMC11270345_01_allergologieselect-8-233-01.jpg
case_images: Figure1
case_images: Pulmonary function test (PFT) was performed, and a flattening compatible with fixed airway obstruction was observed in both inspiratory and expiratory flow volume curves (Figure 1).