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a Creation of working space: dissection of the subcutaneous tissue under direct view; b Creation of working space: moving deeper with stable retraction. The Modena retractor in place with suction tube mounted, preparing for dissection under endoscopic camera assistance; c Creation of working space: dissection under camera assistance can help limit the extension of the axillary incision; d Creation of working space: endoscopic view of dissection along the greater pectoralis fascia
