A 68-year-old man presents with a headache. A review of syst…
A 68-year-old man presents with a headache. A review of systems is noncontributory. His medical history includes hypertension treated with hydrochlorothiazide. There is no family history of blood disorders. Laboratory testing shows a platelet count of 900,000. The hemoglobin and hematocrit are normal. He is scheduled for a bone marrow biopsy. What will the bone marrow biopsy demonstrate?