Does MarginProbe Offer An Advantage Over Full Cavity Shavings? Apr 21, 2017 Dune Medical Devices Educational Resources, Provider Resources Please Share This Tweet Share Plus one Pin It Related Posts Surgeons at Mercy Medical Center in Cedar Rapids preserve more breast tissue and reduce the need for additional surgery by 75% for breast cancer patients with targeted excision using MarginProbe® FDA approved device enables surgeons to preserve more breast tissue while reducing the need for additional surgery according to medical study. Full Cavity Shaving What is full cavity shaving during lumpectomy? Dr. Charles Elboim, MD, explains. What Are The Common Misconceptions About Mastectomy vs Lumpectomy?