Nonpalpable mammographic abnormalities: timing the follow-up studies.

A national survey was undertaken to ascertain whether a consensus exists regarding follow-up of patients who have nonpalpable mammographic abnormalities that are not biopsied. The three abnormalities evaluated were: an uncalcified breast mass, an area of asymmetric breast density, and a cluster of microcalcification. Irrespective of the type of lesion, the schedule of follow-up was identical. More than 90% of all the participants recommended repeat initial examination within 3-6 months. More than 50% follow suspected abnormalities for at least 2 years.