Submitted by Ahmad Alkhasawneh

Lymphocytosis in middle age patient

61-year-old male presented with leukocytosis to primary care physician. CBC result, representative cells from differential and representative bone marrow are provided. Work up (including immunohistochemistry on tissue, flow cytometry, karyotype, FISH, and molecular), morphology guide for blood smear and flow cytometry guide are available under "specials to order".