“…5,10,20,21) The incidence of blebs/bullae on HRCT scans in paediatric population studies was reported to range from 30.8% to 100%, 6,14,17,19,20,22) and the recurrence rate after conservative treatment in patients with air-containing lesions was reported to range from 50% to 100% (Table 4). 6,17,19) These results are consistent with the results of our study of an incidence of blebs/bullae on HRCT scans of 55.3% (63/114) and the 60.3% recurrence rate associated with blebs/bullae on HRCT scans. However, prior studies in the paediatric population were limited by the small number of enrolled patients, which mitigates the significance of the association between air-containing lesions on CT scans and the recurrence of paediatric PSP.…”