Interesting new research from Brazil finds that in asymptomatic elderly never smokers, bronchiectasis may be a "normal" finding in nearly 20% of cases.

19.1% of over-75's undergoing an HRCT scan had radiological bronchiectasis compared to 0% of the younger cohort. 

If confirmed in additional studies, this has important implications for interpretation of HRCT defined bronchiectasis in the elderly, particularly in association with diseases like COPD.