Fig. 3

a The resection specimen of the sternal tumor with safety margin. b After subtotal resection of the sternum, the underlying pericardium and lung are unaffected. c The first layer of polypropylene mesh sutured to the surrounding tissue with monofilament nonabsorbable sutures. d The methyl methacrylate is applied to achieve stiffening of the chest wall. e The second layer of polypropylene mesh covering the methyl methacrylate cement