A 19-year-old male visits his physician because of a persistent cough and progressive fatigue over the past month. Physical examination reveals prominent lymphadenopathy. Laboratory analysis reveals a WBC count of 20 × 109/L with 23% reactive lymphocytes. Patient serum is positive for heterophile antibody. Based on this information, from what is the patient most likely suffering?

Interpret the following results: WBC count: 102 × 109/LDifferential: 13% segmented neutrophils28% band neutrophils15% metamyelocytes8% myelocytes6% promyelocytes15% lymphocytes8% basophils7% monocytes LAP score: 15 (reference interval:  0–400) What disease is suggested?

What is the MCHC in grams per deciliter (g/dL)?

This painful disorder is characterized by marked itching, peeling, red skin. Immunophenotypic studies of cells from the peripheral blood identify malignant T lymphocytes lacking CD5 and CD7.

A patient has a WBC count of 250 × 109/L, and a peripheral blood smear contains many granulocytes and granulocytic precursors including 2% blasts. Pending further tests, which of the following neoplastic conditions is the most likely diagnosis?

The erythrocytic morphology in megaloblastosis is best characterized by:

In hemoglobin C disease, how does the mutation affect the hemoglobin molecule?

All of the following mutations are commonly detected in cases of Esstential thrombocythemia and Primary myelofibrosis, except:

The CBC of a patient from the clinic patient shows absolute lymphocytosis, sustained 10 weeks duration, with increasing WBC counts.  (peripheral blood image shown below). What is the most likely disorder?

A burn patient develops leukocytosis and a “shift to the left”. Large light blue staining cytoplasmic inclusions are found near the periphery of many neutrophils.  These inclusions are probably