An incomplete map: diagnostic gaps in bronchiectasis by age of onset

<title>Extract</title> We read with great interest the recent study by K<sc>halaili</sc> <italic>et al</italic>. [1], which offers a timely multicentre comparison of early-onset (POBE) and adult-onset (AOBE) bronchiectasis across European and Middle Eastern populations. By delineating differences in presentation, microbiology and radiological features, the authors contribute valuable insights into age-related disease heterogeneity. However, several methodological limitations substantially limit the external validity and clinical applicability of these findings in broader, non-tertiary care settings.