Margenthaler, Appleton take new roles at Breast Health Center

The Joanne Knight Breast Health Center at Washington University Medical Center and Siteman Cancer Center has two new leaders, Julie Margenthaler, MD, and Catherine Appleton, MD.


The center was developed as a collaboration among the departments of surgery and radiology and Barnes-Jewish Hospital and has benefitted women because of its ability to provide coordinated care.

Margenthaler, an associate professor of surgery who specializes in breast oncology and breast health, was recently named director of the breast surgical service. She is also director of the breast disease surgical fellowship for the Department of Surgery.

In 2011, Margenthaler and her colleagues evaluated and treated about 560 newly diagnosed patients with a breast cancer diagnosis and more than 1,500 new patients with other breast disorders at the Breast Health Center.


Appleton, MD, assistant professor of radiology, has been named chief of breast imaging at the Mallinckrodt Institute of Radiology and director of the breast radiology service. Appleton currently heads the breast imaging fellowship program. She succeeds Barbara Monsees, MD, the Ronald and Hanna Evens Professor of Women’s Health and professor of radiology, who will be staying at the School of Medicine, but stepping down as section leader because of other national responsibilities.

In 2011, Appleton, Monsees and colleagues evaluated and cared for more than 30,000 women who came for screening, diagnostic evaluation and image-guided breast procedures.