There are two types of cough: productive and nonproductive. A productive cough produces phlegm or mucus, clearing it from the lungs. A nonproductive cough, known as a dry cough, doesn’t produce ...

and a higher proportion had ≥1 destroyed lung lobe on HRCT imaging (29/234 (12.4%, 95% CI:8.5% to 17.3%) vs 7/151 (4.6%, 95% CI: 1.9% to 9.3%), p=0.011) compared to those without regular symptoms.

Multiple large lung bullae (variously termed primary bullous disease of the lung or “vanishing lung syndrome”) have been described in young male smokers.1 In this case series the average smoking ...