PathWays Case Study: October 31

A​ 76-year-old gentleman presented with severe fatigue and night sweats. CBC showed macrocytic anemia (hemoglobin: 6.9 g/dL; MCV: 103 fL) and thrombocytopenia (platelet: 75 x 109/L). Differential peripheral blood counts were as noted here (Neutrophils: 34; Lymphocytes: 24; Monocytes: 10; Eosinophils: 3; Basophils: 1; Metamyelocytes: 1; Myelocytes: 2; Blasts: 25), and the bone marrow differentials were as noted (Segs and bands: 5; Myelocytes: 2; Blasts: 81; Normoblasts: 5; Monocytes: 1; Lymphocytes: 6).

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Hong Fang, M.B.

Hong Fang, M.B.
Resident, Anatomic/Clinical Pathology
Mayo Clinic



Matthew (Matt) Howard, M.D.
Consultant, Division of Hematopathology
Assistant Professor of Laboratory Medicine and Pathology,
Mayo Clinic College of Medicine


April Josselyn (@apriljosselyn)

April Josselyn

April Josselyn is a Marketing Channel Manager at Mayo Clinic Laboratories. She has worked at Mayo Clinic since 2012. Outside of work, April enjoys the outdoors and being "hockey mom" for her two sports-crazed boys.