Fig. 4From: The effect of polyglycolic acid sheet in preventing postoperative recurrent pneumothorax: a prospective cohort studyIntraoperative findings during reoperation. a. ORC: the covered visceral pleura circled by the dotted line was thickened. Newly generated bullae were observed (white arrow). b. PGA: lung covered by the PGA sheet tightly adhered to the parietal pleura (green arrows). ORC, oxidized regenerated cellulose; PGA, polyglycolic acidBack to article page