A 35-year-old male visits his physician with complaints of f…
A 35-year-old male visits his physician with complaints of fatigue and weakness, and loss of appetite. Upon physical examination, the physician finds that the patient’s spleen is enlarged. The patient reports no history of blunt contact to the abdomen that would cause such enlargement. The most striking lab results are anemia, leukopenia, and thrombocytopenia. The results also indicate that lymphocytes with abnormal morphology demonstrating cytoplasmic projections are within the peripheral blood. Which marker is highly specific for this leukemia?