Michael E. Rytting, MD
Department of Pathology and Laboratory Medicine, Calgary Laboratory Services and University of Calgary, Calgary, Canada

Hagop Kantarjian, MD
Leukemia Department, M.D. Anderson Cancer Center, University of Texas, Houston

Maher Albitar, MD
Hematology, Quest Diagnostics Nichols Institute, San Juan Capistrano, CA

Keywords: Acute lymphoblastic leukemia; Myeloperoxidase; Mixed lineage; Burkitt; Therapy

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

• recognize characteristics of leukemia cells that express lymphoid markers simultaneously with myeloperoxidase.
• list the common cytogenetic abnormalities in leukemia cells with myeloperoxidase expression and lymphoid morphology.