Fig. 2From: Modified bar bending method of thoracoscopic nuss procedure on pectus excavatum: a retrospective single-center studyThe key step in surgical procedures. A Electrocoagulation hook was used to cut open the mediastinum parietal pleural and lib appropriately under thoracoscopic surveillance. B The bar is placed through the right thoracic cavity into the mediastinal extrapleural tunnel successfully. C Thoracoscopic transfer to the left thoracic cavity to monitor the safe passage of the guide and barBack to article page