Interesting Cases from the U of U Rad-Path Conference 2019: Differentiating Challenging Entities


A radiology/pathology conference is a way for two disciplines to share their thinking process and learn from each other in how a differential is reached. In the this talk, we chose 3 recently received cases, that happen to be rare but described entities in the breast. Each has important differential diagnoses to exclude. We describe radiologic and histologic features, the differential, and relevant ancillary tests, such as immunohistochemistry and molecular tests, which help arrive at the ultimate diagnosis for each case.

Originally presented on February 10, 2020 in Park City, Utah.

Lecture Presenters

Rachel E. Factor, MD, MHS

Rachel E. Factor, MD, MHS

Associate Professor of Surgical Pathology and Cytopathology
University of Utah School of Medicine
Medical Director, Anatomic Pathology and Cytopathology
ARUP Laboratories

Dr. Factor is an associate professor of surgical pathology and cytopathology at the University of Utah and a medical director at ARUP Laboratories. She is the Director of breast pathology and the Co-Director of the cytology fellowship program. Factor is a Huntsman Cancer Institute (HCI) investigator and participates in HCI's Cancer, Cell Response and Regulation group (CCR), the breast treatment planning conference, and the Women's Disease Oriented Team (WDOT). Dr. Factor is certified by the American Board of Pathology.

Dr. Factor's research focus is in breast pathology and cytopathology. She collaborates with basic scientists, clinicians, and epidemiologists on a range of studies from the molecular basis of breast cancer to improvements in imaging modalities for screening and treatment. Dr. Factor enjoys mentoring residents and fellows, and has seen many successfully present research at national meetings.

Dr. Factor completed her medical degree at the Albert Einstein College of Medicine in the Bronx, NY, followed by residency and fellowships at Brigham and Women's Hospital in Boston, MA.

Eugene Kim, MD

Eugene Kim, MD

Assistant Professor, Breast Imaging Fellowship Director
University of Utah Huntsman Cancer Hospital

Dr. Eugene Kim is an assistant professor of radiology and imaging as well as the breast imaging fellowship director at the University of Utah School of Medicine. He recently completed a fellowship at Memorial Sloan Kettering Cancer Center in New York City. Dr. Kim received his MD from UC San Francisco and completed a residency at Washington University in St. Louis. He was the recipient of RSNA’s 2018 Roentgen Fellow Research Award while at Sloan Kettering.


After this presentation, participants will be able to:

  • Discuss radiologic and pathologic features of three interesting breast cases
  • Use these features to guide the evaluation of the differential diagnoses
  • Identify some important entities to exclude from the differential
  • Recall pertinent immunohistochemical and molecular data to help solidify the diagnoses

Sponsored by:

University of Utah School of Medicine, Department of Pathology, and ARUP Laboratories