A mammotome biopsy is a vacuum-assisted procedure that requires only the insertion of a small sampling probe. This biopsy allows multiple specimens to be obtained without having to be repeatedly removed and reinserted. The procedure takes about one hour and is performed on an outpatient basis. An advantage to this procedure is its ability to accurately biopsy early-stage breast cancer. It also causes less internal scarring, allowing the radiologist to more clearly see new abnormalities on future mammograms.