Approach to myeloproliferative neoplasms Quiz: Ace Your Exams
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A 53-year-old woman presents to the clinic for evaluation of intermittent episodes of loss of vision in her right eye that she describes as episodes of complete blackness that last several minutes and then resolve spontaneously. She has also been experiencing frequent dizziness over the past month. Past medical history is unremarkable, and she does not take any daily medications. Vital signs are within normal limits. Extraocular muscles are intact, and a full ophthalmologic exam is pending. Cardiac and pulmonary exams are within normal limits. Splenomegaly is present on abdominal examination. Laboratory results are shown below. Which of the following additional findings is most likely present given the likely underlying condition?
| Laboratory value | Result | Reference range |
| Hemoglobin | 12.6 g/dL | 12-16 g/dL |
| Hematocrit | 37 % | 36-46 % |
| Platelet count | 1,150,000/mm3 | 150,000-400,000/mm3 |
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