Elham Khanifar, BM BCh
Department of Pathology and Laboratory Medicine, University of California Irvine, School of Medicine, Irvine, CA

Michael J. Stamos, MD
Department of Surgery, University of California Irvine, School of Medicine, Irvine, CA

Tomomi L. Billings, MD
Department of Pathology and Laboratory Medicine, University of California Irvine, School of Medicine, Irvine, CA

Mark Li-cheng Wu, MD
Department of Pathology and Laboratory Medicine, University of California Irvine, School of Medicine, Irvine, CA

Keywords: Colon, Rectum, Carcinoma, Microsatellite instability, Budding, Immunohistochemistry, Biopsy

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

• list immunostains, histologic features, and mechanisms associated with colorectal carcinoma.