In later-stage disease, visual changes will become more apparent.

One of the most obvious features will be the so-calledhyperinflationof the lungs.

Washko GR.Diagnostic imaging in COPD.Semin Respir Crit Care Med.

Hispanic doctors examining x-ray of chest

REB Images / Getty Images

GOLD executive summary.Am J Respir Crit Care Med.

2017;195(5):557-582. doi:10.1164/rccm.201701-0218PP