Which of the following test results is most consistent with a diagnosis of PMF?

Question

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Dacryocytes (teardrop cells) are often seen in the peripheral blood of patients with primary myelofibrosis (PMF), and are part of the diagnostic criteria for the disease. A high percentage of blasts in the peripheral blood (answer A) is more commonly seen in acute myeloid leukemia, and although high white blood cell (WBC) count (answer B) and high platelet (PLT) count (answer D) can be seen in PMF, they are not specific to the disease.

Which of the Following Test Results Is Most Consistent with a Diagnosis