case_images: PMC3883066_01
case_images: PMC3883066_02
case_images: PMC3883066_03
case_images: PMC3883066_04
case_images: PMC3883066_05
case_images: Flow volume loop on spirometry. There is flattening of the expiratory and inspiratory portions of the flow volume loop with decreased mid expiratory and mid inspiratory flows, consistent with fixed airway obstruction.
case_images: ni-2013-4-e21-g001.jpg
case_images: PMC3883066_05_ni-2013-4-e21-g001.jpg
case_images: fig001
case_images: FEV/FVC ratio 80. Flow volume loop was abnormal, consistent with fixed airway obstruction (Figure 1).