New bullae formation in the staple line increases the risk of recurrent pneumothorax following video-assisted thoracoscopic surgery bullectomy for primary spontaneous pneumothorax

Journal of Thoracic Disease
Si Young ChoiChan Beom Park

Abstract

The study aimed to investigate the association between the recurrence of pneumothorax following video-assisted thoracoscopic surgery (VATS) for primary spontaneous pneumothorax (PSP) and the formation of new bullae. This retrospective review examined patients who underwent VATS for PSP between April 2009 and December 2014. Of the 415 operated lungs, high-resolution computed tomography (HRCT) scans of 85 were analyzed. Of the 85 HRCT scans examined, 21 (24.7%) were diagnosed with recurrent pneumothorax and 60 new bullae were found. In total, 39 new bullae were located in the staple line, 38 were at other sites far from the staplers, and 17 were concurrent in the stapling and non-stapling areas. The group with new bullae in staple line exhibited significantly higher recurrence rate following VATS than the groups with no new bullae in the staple line (P=0.000, log-rank test). Cox regression analysis revealed that new bullae formation in the staple line [hazard ratio (HR), 26.664; P=0.003] and the volume of a resected pathology specimen (HR, 1.032; P=0.020) were independent risk factors for pneumothorax recurrence. New bullae formation in the staple line increases the risk of recurrent pneumothorax following VATS. Thus, the current...Continue Reading

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