Yan Peng, MD, PhD
Department of Pathology, University of Texas Southwestern Medical Center at Dallas

Raheela Ashfaq, MD
Department of Pathology, University of Texas Southwestern Medical Center at Dallas

Gene Ewing, MD
Department of Pathology, University of Texas Southwestern Medical Center at Dallas

A. Marilyn Leitch, MD
Division of Surgical Oncology, University of Texas Southwestern Medical Center at Dallas

Kyle H. Molberg, MD
Department of Pathology, University of Texas Southwestern Medical Center at Dallas

Keywords: Axillary sentinel nodes; False-positive; Benign glandular inclusions; Breast carcinoma; Immunostains for myoepithelial markers

Upon completion of this activity, you will be able to:

• provide a differential diagnosis for glandular groups of epithelial cells in axillary lymph nodes.
• define histologic and immunohistochemical features of benign glandular inclusions in axillary lymph nodes.
• list the immunohistochemical stains that can be applied to lymph nodes to differentiate benign glandular inclusions from metastatic carcinoma of breast.