Review Question - QID 213465

A 67-year-old man comes to the clinic complaining of fatigue and dizziness for the past 2 months. He reports that he gets tired easily compared to his baseline and feels dizzy when he exerts himself (e.g., when he walks long distances). His past medical history is significant for hypertension that is controlled with lisinopril. A physical examination demonstrates moderate hepatomegaly and lymphadenopathy. His laboratory studies are shown below.

Leukocyte count and differential:
Leukocyte count: 11,500/mm^3
Segmented neutrophils: 40%
Bands: 3%
Eosinophils: 1%
Basophils: 0%
Lymphocytes: 50%
Monocytes: 8%

Hemoglobin: 11.2 g/dL
Platelet count: 120,000/mm^3
Mean corpuscular hemoglobin concentration: 31%
Mean corpuscular volume: 80 µm^3
Reticulocyte count: 3%
Lactate dehydrogenase: 45 U/L

A subsequent flow cytometry test demonstrates CD20+ cells. What is the most likely finding you would expect in this patient?