OAK BROOK, Ill. -- Researchers have reported that breast masses shown on ultrasound that are diagnosed as “probably benign” can be safely managed with imaging follow-up rather than biopsy, according to a study appearing in the July issue of Radiology.“These findings indicate that ultrasound follow-up can spare women from unnecessary, invasive biopsies,” said Oswald Graf, M.D., from the Department of Radiology, Ambulatory Care Center in Steyr, Austria.