A 25-year-old male presented to a local emergency department after a serious fall. Initial laboratory studies revealed pancytopenia. Patient was referred for a bone marrow aspirate and biopsy (bone marrow aspirate is shown in images 1–3 ).
Michael Keeney, M.D.
Resident, Anatomic/Clinical Pathology
Curtis Hanson, M.D.
Consultant, Division of Hematopathology
Professor of Laboratory Medicine and Pathology,
Mayo Clinic College of Medicine