Objective To investigate the clinical application of mammotome minimally invasive techniques for benignbreast mass, and the risk factors of residual tumor. Methods A total number of 722 patients with benign breast mass re-ceived treatment of mammotome minimally invasive operation. Skin incision length, peeling times, blood loss and operationtime were recorded. The complications after surgery, the difference of constitution ratio in different BI-RADS grades, massnumber, mass volume and clinic features were a...