The Authors describe a new procedure using oxidized regenerated cellulose polymer for breast cancer. Oncoplastic breast surgery allows a more radical local tumour excision achieving an acceptable cosmetic result. Breast reshaping absorbs the volume loss and decreases the risk of a localized defect although there are zones that are at high risk of deformity. Once reabsorption of the seroma occurs, the excision cavity becomes prominent due to fibrosis and retraction of the surrounding tissue creating a noticeable defect. In oncoplastic breast surgery the oxidized regenerated cellulose by preventing the hematoma, can promote dermal fibroblasts proliferation and cell migration playing a role in adjustment of the shape, volume and symmetry of the breast and reducing skin retraction.