Could a simple shave during breast surgery save women from going under the knife again?

This study tests a technique called systematic margin shaving during breast-conserving surgery for breast cancer. The idea is to remove a thin extra layer of tissue around the tumor right after the main lump is taken out, based on a pathologist's check. Researchers want to see if this lowers the number of cases where cancer cells are found at the edge of the removed tissue (positive margins), which often means a second surgery. About 234 women having breast-conserving surgery will be randomly assigned to either get the extra shaving or standard surgery alone.