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학습 자료 둘러보기 →A CBC with differential is the initial screening tool. While anemia and thrombocytopenia are supportive findings resulting from bone marrow infiltration, they are nonspecific.
The single most indicative finding is the presence of blast cells in the peripheral blood smear. This is considered a pathognomonic finding for acute leukemia and requires immediate reporting to the provider.
A normal or mildly elevated WBC count (12,000/mm³) does not rule out leukemia. The malignant blasts may be confined to the bone marrow initially, or the patient may present with leukopenia. Always correlate with the differential count.
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