Triangle Technique : A Novel Oncoplastic Technique to Prevent Axial Dog-ear after Mastectomy

Abstract

Following mastectomy, cosmetic and functional results can be impaired by the presence of an axial dog-ear. This can be a serious problem, especially for obese women who do not undergo axillary dissection. Rubbing the axillary dog-ear and the upper arm causes pain, which may interfere with daily life. We developed the triangle technique to prevent the dog-ear deformity of the axilla. With this technique, the skin and subcutaneous fat of the axilla are cut into an equilateral triangle, and any surplus soft tissue is excised. In all cases in which this technique was applied, the axillary fat became less conspicuous than that after the conventional method, and there were no complaints of frictional wear or pain in the axilla. There were no problems after surgery, such as scar necrosis or infection, and the triangle technique was performed safely without major complications. Although it is disadvantageous in that it results in a longer scar than conventional mastectomy, it is hidden in the axilla and does not become a serious problem. It is a reproducible and simple technique that improves cosmetic and patient satisfaction.