“…Previous studies have reported that female sex, young age, smoking habit, presence of bilateral PSP, the area of RAS, the size and distribution of bullae, and incomplete bullectomy are risk factors for postoperative recurrence of PSP. 8,10,12,18,19) However, few previous studies have reported the impact of a change in the alveolar structure at the base of blebs and bullae on the recurrence of PSP after VATS bullectomy. Histological analysis of resected blebs and bullae is usually performed to identify unexpected lung diseases.…”